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85 vulnerabilities by Anthropic
CVE-2026-111497 (GCVE-0-2026-111497)
Vulnerability from nvd – Published: 2026-10-22 13:35 – Updated: 2026-11-10 12:50Title
Out-of-Bounds Write in Google Brotli Decoder
Summary
A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.
Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 00:00 UTC
Assigner
References
24 references
Impacted products
76 products
| Vendor | Product | Version | |
|---|---|---|---|
| Brotli |
Affected:
1.0.3 , < 1.0.10
(semver)
Affected: 1.1.0 , < 1.1.1 (semver) Affected: 1.2.0 , < 1.2.1 (semver) |
||
| Siemens | Calibre |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Calibre ICE |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Capital |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Cloud Connector Configurator |
Affected:
0 , < V1.24.3
(custom)
|
|
| Siemens | Common Configurator (CC on IEM) |
Affected:
0 , < *
(custom)
|
|
| Siemens | Common Configurator on Device (CC on Edge) |
Affected:
0 , < *
(custom)
|
|
| Siemens | COMOS Walkinside |
Affected:
0 , < *
(custom)
|
|
| Siemens | Data Flow Monitoring |
Affected:
0 , < V3.0.18
(custom)
|
|
| Siemens | Databus Configurator |
Affected:
0 , < V4.0.1
(custom)
|
|
| Siemens | DataXess Configurator |
Affected:
0 , < V1.5.7
(custom)
|
|
| Siemens | Designcenter X Essentials |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Desigo CC family V8 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Desigo CC family V9 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Edge OPC UA Server Configurator |
Affected:
0 , < V2.3.10
(custom)
|
|
| Siemens | Flow Creator Configurator |
Affected:
0 , < V1.15.1
(custom)
|
|
| Siemens | gDAP (gPROMS Digital Application Platform) |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Gridscale X DSA |
Affected:
V5.3 , < V5.4
(custom)
|
|
| Siemens | Gridscale X PSS®E |
Affected:
0 , < V36.8.0
(custom)
|
|
| Siemens | Heliox Dual Port 60kW |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Heliox Flex Pro |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | HyperLynx |
Affected:
0 , < *
(custom)
|
|
| Siemens | Industrial Edge Hub |
Affected:
0 , < *
(custom)
|
|
| Siemens | Industrial Edge Management Cloud |
Affected:
0 , < *
(custom)
|
|
| Siemens | Innexis Architecture Native Acceleration 2026 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Insights Hub |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Connect Electronics |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Connect MOM |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Core |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Discrete |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Foundation |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Pharma |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Process |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Intelligence |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Intra Plant Logistics |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Quality |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter RDnL |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter X |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Pro Essentials |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Pro Student Edition |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Professional |
Affected:
0 , < *
(custom)
|
|
| Siemens | Pathway to Learning Engineering |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | PAVE360 Automotive 2026 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Polarion |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Process Preparation X |
Affected:
0 , < *
(custom)
|
|
| Siemens | Project Server Web Administration Tool |
Affected:
0 , < *
(custom)
|
|
| Siemens | SICHARGE FLEX |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | SICHARGE UC |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Sifinity Go |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Sifinity Setup |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC BRAUMAT |
Affected:
V8.2 Update 1 , < V8.2 Update 5
(custom)
|
|
| Siemens | SIMATIC Profiling Tool |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC SISTAR |
Affected:
V8.2 Update 1 , < V8.2 Update 5
(custom)
|
|
| Siemens | SIMATIC WinCC Companion |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC OA V3.20 |
Affected:
0 , < V3.20 P17.1
(custom)
|
|
| Siemens | SIMATIC WinCC OA V3.21 |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Runtime Professional |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified for Industrial Edge |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified PC Runtime |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified SIQENCE |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC V7/V8 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Simcenter Executable Digital Twin |
Affected:
0 , < *
(custom)
|
|
| Siemens | Simcenter Studio |
Affected:
0 , < *
(custom)
|
|
| Siemens | Solid Edge |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter Share |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2412 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2506 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2512 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2606 |
Affected:
0 , < *
(custom)
|
|
| Siemens | TIA Administrator |
Affected:
0 , < *
(custom)
|
|
| Siemens | User Management Component (UMC) |
Affected:
0 , < *
(custom)
|
|
| Siemens | VersiCharge AC Series |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | VersiCloud |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Xpedition Designer |
Affected:
0 , < *
(custom)
|
|
| Siemens | Xpedition Enterprise |
Affected:
0 , < *
(custom)
|
|
| Siemens | RUGGEDCOM APE1808 |
Affected:
0 , < *
(custom)
|
Date Public
2026-02-27 07:50
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{
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{
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{
"defaultStatus": "unknown",
"product": "Desigo CC family V8",
"vendor": "Siemens",
"versions": [
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"lessThan": "*",
"status": "affected",
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]
},
{
"defaultStatus": "unknown",
"product": "Desigo CC family V9",
"vendor": "Siemens",
"versions": [
{
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{
"defaultStatus": "unknown",
"product": "Edge OPC UA Server Configurator",
"vendor": "Siemens",
"versions": [
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"versionType": "custom"
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{
"defaultStatus": "unknown",
"product": "Flow Creator Configurator",
"vendor": "Siemens",
"versions": [
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"product": "gDAP (gPROMS Digital Application Platform)",
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"product": "Gridscale X DSA",
"vendor": "Siemens",
"versions": [
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"vendor": "Siemens",
"versions": [
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"status": "affected",
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"versionType": "custom"
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{
"defaultStatus": "unknown",
"product": "Heliox Dual Port 60kW",
"vendor": "Siemens",
"versions": [
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"versions": [
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]
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"vendor": "Siemens",
"versions": [
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"vendor": "Siemens",
"versions": [
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]
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{
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"vendor": "Siemens",
"versions": [
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}
]
},
{
"defaultStatus": "unknown",
"product": "Innexis Architecture Native Acceleration 2026",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Insights Hub",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
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]
},
{
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"vendor": "Siemens",
"versions": [
{
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"status": "affected",
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"versionType": "custom"
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]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Connect MOM",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
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]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Execution Core",
"vendor": "Siemens",
"versions": [
{
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"status": "affected",
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"versionType": "custom"
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]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Execution Discrete",
"vendor": "Siemens",
"versions": [
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]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Execution Foundation",
"vendor": "Siemens",
"versions": [
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"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Execution Pharma",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Execution Process",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
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]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Intelligence",
"vendor": "Siemens",
"versions": [
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"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Opcenter Intra Plant Logistics",
"vendor": "Siemens",
"versions": [
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"status": "affected",
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"defaultStatus": "unknown",
"product": "Opcenter Quality",
"vendor": "Siemens",
"versions": [
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"status": "affected",
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"product": "Opcenter RDnL",
"vendor": "Siemens",
"versions": [
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"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Opcenter X",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "PADS Pro Essentials",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "PADS Pro Student Edition",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "PADS Professional",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Pathway to Learning Engineering",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "PAVE360 Automotive 2026",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Polarion",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Process Preparation X",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "Project Server Web Administration Tool",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SICHARGE FLEX",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
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CVE-2026-103435 (GCVE-0-2026-103435)
Vulnerability from nvd – Published: 2026-10-07 12:50 – Updated: 2026-10-07 14:39
VLAI
EPSS
VEX
Title
Arbitrary File Write via Write-Time Symlink Following (TOCTOU) in Claude Code
Summary
Claude Code validated that a target file path resided within the project working directory at permission-check time, but re-resolved the path at write time without repeating that validation. This time-of-check to time-of-use (TOCTOU) gap allowed an attacker who could write to the workspace to atomically replace a project file with a symlink, causing Claude Code to follow the symlink and write its output to an arbitrary file outside the project sandbox. Exploitation required the ability to win a race condition against the write operation and write access to the shared workspace, enabling a lower-privileged attacker to redirect benign edits to sensitive files (e.g., shell configuration) in a higher-privileged session.
Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.
Thank you to hackerone.com/c_h4ck_0 for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 14:39 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | @anthropic-ai/claude-code |
Affected:
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CVE-2026-103012 (GCVE-0-2026-103012)
Vulnerability from nvd – Published: 2026-09-30 11:30 – Updated: 2026-09-30 14:28
VLAI
EPSS
VEX
Summary
Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its configuration, ahead of the user's valid Claude Enterprise or Team sign-in when fetching the organization's server-managed settings, even though the session itself authenticated with the Enterprise or Team account. When the settings endpoint rejected that stored key, the session started without the organization's server-managed policy (such as permission deny rules, model restrictions and managed-only locks) or, if a previously cached copy existed on the machine, kept applying that stale copy without receiving later policy changes — while continuing to operate as the organization's account. Triggering this required local access to a device with such a stored API key; the no-policy case additionally required that no managed settings had previously been cached. Endpoint-managed (MDM or file-based) settings were not affected. Claude for Enterprise organizations were affected from version 2.0.68; Claude for Work (Team) organizations from version 2.1.38, when server-managed settings became available to them.
Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to version 2.1.260 or later.
Thank you to Tamas Voros / NVIDIA AI Red Team for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:28 UTC
CWE
- CWE-696 - Incorrect Behavior Order
Assigner
References
1 reference
Impacted products
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CVE-2026-55607 (GCVE-0-2026-55607)
Vulnerability from nvd – Published: 2026-06-29 14:04 – Updated: 2026-06-29 15:51
VLAI
EPSS
VEX
Title
Claude Code: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution
Summary
Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 15:51 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.38, < 2.1.163
|
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CVE-2026-46406 (GCVE-0-2026-46406)
Vulnerability from nvd – Published: 2026-06-29 14:03 – Updated: 2026-06-29 15:26
VLAI
EPSS
VEX
Title
Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write
Summary
Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 15:25 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.59, < 2.1.128
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CVE-2026-7574 (GCVE-0-2026-7574)
Vulnerability from nvd – Published: 2026-06-23 23:54 – Updated: 2026-06-24 13:04
VLAI
EPSS
VEX
Title
Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use
Summary
Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.1348.0, v1.1617.0, and v1.2278.0) validates only file presence and a version marker string before booting rootfs.img, but does not verify image content integrity at time-of-use. A local attacker with unprivileged code execution as the victim macOS user can modify the VM root filesystem image and have it trusted on subsequent Cowork VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories. The estimated CWE mapping is CWE-353 (Missing Support for Integrity Check).
Severity
8.7 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CNA · AHA (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 13:03 UTC
CWE
- CWE-353 - Missing support for integrity check
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cfp.recon.cx/recon-2026/talk/DZUQYU/ | related |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | Claude Desktop Cowork |
Affected:
1.1348.0 , ≤ 1.2278.0
(semver)
|
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CVE-2026-54316 (GCVE-0-2026-54316)
Vulnerability from nvd – Published: 2026-06-23 17:06 – Updated: 2026-06-23 17:37
VLAI
EPSS
VEX
Title
Claude Code: Out-of-Band Data Exfiltration via Pre-Approved HuggingFace Domain in WebFetch
Summary
Claude Code is an agentic coding tool. From 0.2.54 until 2.1.163, because the hostname huggingface.co was pre-approved as a bare hostname for the WebFetch tool, any path on that domain—including attacker-controlled model repositories—was auto-approved without a permission prompt or being subject to --allowedTools restrictions. An attacker able to inject untrusted content into a Claude Code context could direct it to issue WebFetch requests against attacker-controlled repository files (e.g. /resolve/main/config.json), which HuggingFace counts as downloads server-side, creating a covert out-of-band channel for encoding and exfiltrating data Claude can access such as files, environment variables, or command output. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window. This vulnerability is fixed in 2.1.163.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 17:37 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 0.2.54, < 2.1.163
|
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CVE-2026-44470 (GCVE-0-2026-44470)
Vulnerability from nvd – Published: 2026-05-13 15:41 – Updated: 2026-05-13 18:37
VLAI
EPSS
VEX
Title
Claude Desktop: Local Privilege Escalation via Directory Junction in CoworkVMService
Summary
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows ran as SYSTEM and did not validate whether the VM bundle directory was a real directory or an NTFS directory junction before creating files within it. A local non-elevated user could replace the user-writable VM bundle directory with a directory junction pointing to an attacker-chosen location, causing the service to create a SYSTEM-owned file in an arbitrary directory. This could be leveraged for local privilege escalation. This vulnerability is fixed in 1.3834.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 18:36 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 1.3834.0
|
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CVE-2026-44467 (GCVE-0-2026-44467)
Vulnerability from nvd – Published: 2026-05-13 15:40 – Updated: 2026-05-14 18:29
VLAI
EPSS
VEX
Title
Claude Desktop: SSH Host Key Verification Bypass Allows Man-in-the-Middle Attack on Remote Sessions
Summary
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in ~/.ssh/known_hosts without comparing the server's presented host key against the stored key. This allowed a network-positioned attacker to present an arbitrary SSH host key and have the connection silently accepted, enabling a man-in-the-middle attack on remote development sessions. Successful exploitation required the attacker to be in a network position to intercept SSH traffic (e.g., via ARP spoofing, rogue Wi-Fi, or DNS poisoning) and the target hostname to already have an entry in the victim's known_hosts file. This vulnerability is fixed in 1.4304.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 18:28 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 1.2581.0, < 1.4304.0
|
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CVE-2026-40068 (GCVE-0-2026-40068)
Vulnerability from nvd – Published: 2026-05-05 20:52 – Updated: 2026-05-06 15:24
VLAI
EPSS
VEX
Title
Claude Code arbitrary code execution via git worktree commondir trust dialog bypass
Summary
In versions 2.1.63 through 2.1.83 of Claude Code, the folder trust determination logic used the git worktree commondir file without validating its contents. An attacker could craft a malicious repository with a commondir file pointing to a path the victim had previously trusted, causing Claude Code to bypass its trust confirmation dialog and immediately execute hooks defined in `.claude/settings.json`. Exploitation requires the victim to clone the malicious repository and run Claude Code within it, and the attacker must know or guess a path the victim had already trusted. This issue has been fixed in version 2.1.84.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 14:50 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.63, < 2.1.84
|
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CVE-2026-41686 (GCVE-0-2026-41686)
Vulnerability from nvd – Published: 2026-05-04 18:41 – Updated: 2026-05-05 14:38
VLAI
EPSS
VEX
Title
Claude SDK for TypeScript has Insecure Default File Permissions in Local Filesystem Memory Tool
Summary
Claude SDK for TypeScript provides access to the Claude API from server-side TypeScript or JavaScript applications. From version 0.79.0 to before version 0.91.1, the BetaLocalFilesystemMemoryTool in the Anthropic TypeScript SDK created memory files and directories using the Node.js default modes (0o666 for files, 0o777 for directories), leaving them world-readable on systems with a standard umask and world-writable in environments with a permissive umask such as many Docker base images. A local attacker on a shared host could read persisted agent state, and in containerized deployments could modify memory files to influence subsequent model behavior. This issue has been patched in version 0.91.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 14:35 UTC
CWE
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/anthropic-sdk-types… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | anthropic-sdk-typescript |
Affected:
>= 0.79.0, < 0.91.1
|
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CVE-2026-39861 (GCVE-0-2026-39861)
Vulnerability from nvd – Published: 2026-04-21 00:56 – Updated: 2026-04-21 13:44
VLAI
EPSS
VEX
Title
Claude Code: Sandbox Escape via Symlink Following Allows Arbitrary File Write Outside Workspace
Summary
Claude Code is an agentic coding tool. Prior to version 2.1.64, Claude Code's sandbox did not prevent sandboxed processes from creating symlinks pointing to locations outside the workspace. When Claude Code subsequently wrote to a path within such a symlink, its unsandboxed process followed the symlink and wrote to the target location outside the workspace without prompting the user for confirmation. This allowed a sandbox escape where neither the sandboxed command nor the unsandboxed app could independently write outside the workspace, but their combination could write to arbitrary locations, potentially leading to code execution outside the sandbox. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window to trigger sandboxed code execution via prompt injection. Users on standard Claude Code auto-update have received this fix automatically. Users performing manual updates are advised to update to version 2.1.64 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 13:44 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 2.1.64
|
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"timestamp": "2026-04-21T13:44:29.934669Z",
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CVE-2026-35603 (GCVE-0-2026-35603)
Vulnerability from nvd – Published: 2026-04-17 20:38 – Updated: 2026-04-20 14:57
VLAI
EPSS
VEX
Title
Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows
Summary
Claude Code is an agentic coding tool. In versions prior to 2.1.75 on Windows, Claude Code loaded the system-wide default configuration from C:\ProgramData\ClaudeCode\managed-settings.json without validating directory ownership or access permissions. Because the ProgramData directory is writable by non-administrative users by default and the ClaudeCode subdirectory was not pre-created or access-restricted, a low-privileged local user could create this directory and place a malicious configuration file that would be automatically loaded for any user launching Claude Code on the same machine. Exploiting this would have required a shared multi-user Windows system and a victim user to launch Claude Code after the malicious configuration was placed. This issue has been fixed on version 2.1.75.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-20 14:52 UTC
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 2.1.75
|
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CVE-2026-35022 (GCVE-0-2026-35022)
Vulnerability from nvd – Published: 2026-04-06 18:59 – Updated: 2026-05-29 16:26
VLAI
EPSS
VEX
This CVE ID has been rejected by its CVE Numbering Authority (CNA). It was determined that the -p flag behavior is documented in Anthropic's claude -h output with an explicit warning that non-interactive mode should only be used in trusted directories, making this intended and described behavior rather than a vulnerability.
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CVE-2026-35021 (GCVE-0-2026-35021)
Vulnerability from nvd – Published: 2026-04-06 18:59 – Updated: 2026-05-29 16:26
VLAI
EPSS
VEX
This CVE ID has been rejected by its CVE Numbering Authority (CNA). It was determined that the affected code path cannot be triggered through normal usage of Claude Code.
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CVE-2026-35020 (GCVE-0-2026-35020)
Vulnerability from nvd – Published: 2026-04-06 18:58 – Updated: 2026-05-29 16:25
VLAI
EPSS
VEX
This CVE ID has been rejected by the its CVE Numbering Authority (CNA). It was determined that the attack requires an attacker to already control arbitrary environment variables, a level of access they consider functionally equivalent to code execution and outside the threat model of CLI tools.
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CVE-2026-111497 (GCVE-0-2026-111497)
Vulnerability from cvelistv5 – Published: 2026-10-22 13:35 – Updated: 2026-11-10 12:50Title
Out-of-Bounds Write in Google Brotli Decoder
Summary
A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.
Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 00:00 UTC
Assigner
References
24 references
Impacted products
76 products
| Vendor | Product | Version | |
|---|---|---|---|
| Brotli |
Affected:
1.0.3 , < 1.0.10
(semver)
Affected: 1.1.0 , < 1.1.1 (semver) Affected: 1.2.0 , < 1.2.1 (semver) |
||
| Siemens | Calibre |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Calibre ICE |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Capital |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Cloud Connector Configurator |
Affected:
0 , < V1.24.3
(custom)
|
|
| Siemens | Common Configurator (CC on IEM) |
Affected:
0 , < *
(custom)
|
|
| Siemens | Common Configurator on Device (CC on Edge) |
Affected:
0 , < *
(custom)
|
|
| Siemens | COMOS Walkinside |
Affected:
0 , < *
(custom)
|
|
| Siemens | Data Flow Monitoring |
Affected:
0 , < V3.0.18
(custom)
|
|
| Siemens | Databus Configurator |
Affected:
0 , < V4.0.1
(custom)
|
|
| Siemens | DataXess Configurator |
Affected:
0 , < V1.5.7
(custom)
|
|
| Siemens | Designcenter X Essentials |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Desigo CC family V8 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Desigo CC family V9 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Edge OPC UA Server Configurator |
Affected:
0 , < V2.3.10
(custom)
|
|
| Siemens | Flow Creator Configurator |
Affected:
0 , < V1.15.1
(custom)
|
|
| Siemens | gDAP (gPROMS Digital Application Platform) |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Gridscale X DSA |
Affected:
V5.3 , < V5.4
(custom)
|
|
| Siemens | Gridscale X PSS®E |
Affected:
0 , < V36.8.0
(custom)
|
|
| Siemens | Heliox Dual Port 60kW |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Heliox Flex Pro |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | HyperLynx |
Affected:
0 , < *
(custom)
|
|
| Siemens | Industrial Edge Hub |
Affected:
0 , < *
(custom)
|
|
| Siemens | Industrial Edge Management Cloud |
Affected:
0 , < *
(custom)
|
|
| Siemens | Innexis Architecture Native Acceleration 2026 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Insights Hub |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Connect Electronics |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Connect MOM |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Core |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Discrete |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Foundation |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Pharma |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Execution Process |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Intelligence |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Intra Plant Logistics |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter Quality |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter RDnL |
Affected:
0 , < *
(custom)
|
|
| Siemens | Opcenter X |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Pro Essentials |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Pro Student Edition |
Affected:
0 , < *
(custom)
|
|
| Siemens | PADS Professional |
Affected:
0 , < *
(custom)
|
|
| Siemens | Pathway to Learning Engineering |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | PAVE360 Automotive 2026 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Polarion |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Process Preparation X |
Affected:
0 , < *
(custom)
|
|
| Siemens | Project Server Web Administration Tool |
Affected:
0 , < *
(custom)
|
|
| Siemens | SICHARGE FLEX |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | SICHARGE UC |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Sifinity Go |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Sifinity Setup |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC BRAUMAT |
Affected:
V8.2 Update 1 , < V8.2 Update 5
(custom)
|
|
| Siemens | SIMATIC Profiling Tool |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC SISTAR |
Affected:
V8.2 Update 1 , < V8.2 Update 5
(custom)
|
|
| Siemens | SIMATIC WinCC Companion |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC OA V3.20 |
Affected:
0 , < V3.20 P17.1
(custom)
|
|
| Siemens | SIMATIC WinCC OA V3.21 |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Runtime Professional |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified for Industrial Edge |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified PC Runtime |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC Unified SIQENCE |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC WinCC V7/V8 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Simcenter Executable Digital Twin |
Affected:
0 , < *
(custom)
|
|
| Siemens | Simcenter Studio |
Affected:
0 , < *
(custom)
|
|
| Siemens | Solid Edge |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter Share |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2412 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2506 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2512 |
Affected:
0 , < *
(custom)
|
|
| Siemens | Teamcenter V2606 |
Affected:
0 , < *
(custom)
|
|
| Siemens | TIA Administrator |
Affected:
0 , < *
(custom)
|
|
| Siemens | User Management Component (UMC) |
Affected:
0 , < *
(custom)
|
|
| Siemens | VersiCharge AC Series |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | VersiCloud |
Unaffected:
0 , < *
(custom)
|
|
| Siemens | Xpedition Designer |
Affected:
0 , < *
(custom)
|
|
| Siemens | Xpedition Enterprise |
Affected:
0 , < *
(custom)
|
|
| Siemens | RUGGEDCOM APE1808 |
Affected:
0 , < *
(custom)
|
Date Public
2026-02-27 07:50
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CVE-2026-103435 (GCVE-0-2026-103435)
Vulnerability from cvelistv5 – Published: 2026-10-07 12:50 – Updated: 2026-10-07 14:39
VLAI
EPSS
VEX
Title
Arbitrary File Write via Write-Time Symlink Following (TOCTOU) in Claude Code
Summary
Claude Code validated that a target file path resided within the project working directory at permission-check time, but re-resolved the path at write time without repeating that validation. This time-of-check to time-of-use (TOCTOU) gap allowed an attacker who could write to the workspace to atomically replace a project file with a symlink, causing Claude Code to follow the symlink and write its output to an arbitrary file outside the project sandbox. Exploitation required the ability to win a race condition against the write operation and write access to the shared workspace, enabling a lower-privileged attacker to redirect benign edits to sensitive files (e.g., shell configuration) in a higher-privileged session.
Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.
Thank you to hackerone.com/c_h4ck_0 for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 14:39 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | @anthropic-ai/claude-code |
Affected:
0 , < 2.1.129
(semver)
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CVE-2026-103012 (GCVE-0-2026-103012)
Vulnerability from cvelistv5 – Published: 2026-09-30 11:30 – Updated: 2026-09-30 14:28
VLAI
EPSS
VEX
Summary
Claude Code selected an API key stored by Claude Code, for example from an earlier `/login` or written directly to its configuration, ahead of the user's valid Claude Enterprise or Team sign-in when fetching the organization's server-managed settings, even though the session itself authenticated with the Enterprise or Team account. When the settings endpoint rejected that stored key, the session started without the organization's server-managed policy (such as permission deny rules, model restrictions and managed-only locks) or, if a previously cached copy existed on the machine, kept applying that stale copy without receiving later policy changes — while continuing to operate as the organization's account. Triggering this required local access to a device with such a stored API key; the no-policy case additionally required that no managed settings had previously been cached. Endpoint-managed (MDM or file-based) settings were not affected. Claude for Enterprise organizations were affected from version 2.0.68; Claude for Work (Team) organizations from version 2.1.38, when server-managed settings became available to them.
Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to version 2.1.260 or later.
Thank you to Tamas Voros / NVIDIA AI Red Team for reporting this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:28 UTC
CWE
- CWE-696 - Incorrect Behavior Order
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | @anthropic-ai/claude-code |
Affected:
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CVE-2026-55607 (GCVE-0-2026-55607)
Vulnerability from cvelistv5 – Published: 2026-06-29 14:04 – Updated: 2026-06-29 15:51
VLAI
EPSS
VEX
Title
Claude Code: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution
Summary
Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 15:51 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
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CVE-2026-46406 (GCVE-0-2026-46406)
Vulnerability from cvelistv5 – Published: 2026-06-29 14:03 – Updated: 2026-06-29 15:26
VLAI
EPSS
VEX
Title
Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write
Summary
Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 15:25 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
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Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
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CVE-2026-7574 (GCVE-0-2026-7574)
Vulnerability from cvelistv5 – Published: 2026-06-23 23:54 – Updated: 2026-06-24 13:04
VLAI
EPSS
VEX
Title
Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use
Summary
Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.1348.0, v1.1617.0, and v1.2278.0) validates only file presence and a version marker string before booting rootfs.img, but does not verify image content integrity at time-of-use. A local attacker with unprivileged code execution as the victim macOS user can modify the VM root filesystem image and have it trusted on subsequent Cowork VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories. The estimated CWE mapping is CWE-353 (Missing Support for Integrity Check).
Severity
8.7 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CNA · AHA (v2.0.3)
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 13:03 UTC
CWE
- CWE-353 - Missing support for integrity check
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cfp.recon.cx/recon-2026/talk/DZUQYU/ | related |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | Claude Desktop Cowork |
Affected:
1.1348.0 , ≤ 1.2278.0
(semver)
|
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CVE-2026-54316 (GCVE-0-2026-54316)
Vulnerability from cvelistv5 – Published: 2026-06-23 17:06 – Updated: 2026-06-23 17:37
VLAI
EPSS
VEX
Title
Claude Code: Out-of-Band Data Exfiltration via Pre-Approved HuggingFace Domain in WebFetch
Summary
Claude Code is an agentic coding tool. From 0.2.54 until 2.1.163, because the hostname huggingface.co was pre-approved as a bare hostname for the WebFetch tool, any path on that domain—including attacker-controlled model repositories—was auto-approved without a permission prompt or being subject to --allowedTools restrictions. An attacker able to inject untrusted content into a Claude Code context could direct it to issue WebFetch requests against attacker-controlled repository files (e.g. /resolve/main/config.json), which HuggingFace counts as downloads server-side, creating a covert out-of-band channel for encoding and exfiltrating data Claude can access such as files, environment variables, or command output. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window. This vulnerability is fixed in 2.1.163.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 17:37 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 0.2.54, < 2.1.163
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CVE-2026-44470 (GCVE-0-2026-44470)
Vulnerability from cvelistv5 – Published: 2026-05-13 15:41 – Updated: 2026-05-13 18:37
VLAI
EPSS
VEX
Title
Claude Desktop: Local Privilege Escalation via Directory Junction in CoworkVMService
Summary
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows ran as SYSTEM and did not validate whether the VM bundle directory was a real directory or an NTFS directory junction before creating files within it. A local non-elevated user could replace the user-writable VM bundle directory with a directory junction pointing to an attacker-chosen location, causing the service to create a SYSTEM-owned file in an arbitrary directory. This could be leveraged for local privilege escalation. This vulnerability is fixed in 1.3834.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 18:36 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 1.3834.0
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CVE-2026-44467 (GCVE-0-2026-44467)
Vulnerability from cvelistv5 – Published: 2026-05-13 15:40 – Updated: 2026-05-14 18:29
VLAI
EPSS
VEX
Title
Claude Desktop: SSH Host Key Verification Bypass Allows Man-in-the-Middle Attack on Remote Sessions
Summary
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. From 1.2581.0 to before 1.4304.0, Claude Desktop's SSH remote development feature verified only whether a hostname existed in ~/.ssh/known_hosts without comparing the server's presented host key against the stored key. This allowed a network-positioned attacker to present an arbitrary SSH host key and have the connection silently accepted, enabling a man-in-the-middle attack on remote development sessions. Successful exploitation required the attacker to be in a network position to intercept SSH traffic (e.g., via ARP spoofing, rogue Wi-Fi, or DNS poisoning) and the target hostname to already have an entry in the victim's known_hosts file. This vulnerability is fixed in 1.4304.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 18:28 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 1.2581.0, < 1.4304.0
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CVE-2026-40068 (GCVE-0-2026-40068)
Vulnerability from cvelistv5 – Published: 2026-05-05 20:52 – Updated: 2026-05-06 15:24
VLAI
EPSS
VEX
Title
Claude Code arbitrary code execution via git worktree commondir trust dialog bypass
Summary
In versions 2.1.63 through 2.1.83 of Claude Code, the folder trust determination logic used the git worktree commondir file without validating its contents. An attacker could craft a malicious repository with a commondir file pointing to a path the victim had previously trusted, causing Claude Code to bypass its trust confirmation dialog and immediately execute hooks defined in `.claude/settings.json`. Exploitation requires the victim to clone the malicious repository and run Claude Code within it, and the attacker must know or guess a path the victim had already trusted. This issue has been fixed in version 2.1.84.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 14:50 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
>= 2.1.63, < 2.1.84
|
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CVE-2026-41686 (GCVE-0-2026-41686)
Vulnerability from cvelistv5 – Published: 2026-05-04 18:41 – Updated: 2026-05-05 14:38
VLAI
EPSS
VEX
Title
Claude SDK for TypeScript has Insecure Default File Permissions in Local Filesystem Memory Tool
Summary
Claude SDK for TypeScript provides access to the Claude API from server-side TypeScript or JavaScript applications. From version 0.79.0 to before version 0.91.1, the BetaLocalFilesystemMemoryTool in the Anthropic TypeScript SDK created memory files and directories using the Node.js default modes (0o666 for files, 0o777 for directories), leaving them world-readable on systems with a standard umask and world-writable in environments with a permissive umask such as many Docker base images. A local attacker on a shared host could read persisted agent state, and in containerized deployments could modify memory files to influence subsequent model behavior. This issue has been patched in version 0.91.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-05 14:35 UTC
CWE
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/anthropic-sdk-types… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | anthropic-sdk-typescript |
Affected:
>= 0.79.0, < 0.91.1
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CVE-2026-39861 (GCVE-0-2026-39861)
Vulnerability from cvelistv5 – Published: 2026-04-21 00:56 – Updated: 2026-04-21 13:44
VLAI
EPSS
VEX
Title
Claude Code: Sandbox Escape via Symlink Following Allows Arbitrary File Write Outside Workspace
Summary
Claude Code is an agentic coding tool. Prior to version 2.1.64, Claude Code's sandbox did not prevent sandboxed processes from creating symlinks pointing to locations outside the workspace. When Claude Code subsequently wrote to a path within such a symlink, its unsandboxed process followed the symlink and wrote to the target location outside the workspace without prompting the user for confirmation. This allowed a sandbox escape where neither the sandboxed command nor the unsandboxed app could independently write outside the workspace, but their combination could write to arbitrary locations, potentially leading to code execution outside the sandbox. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window to trigger sandboxed code execution via prompt injection. Users on standard Claude Code auto-update have received this fix automatically. Users performing manual updates are advised to update to version 2.1.64 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 13:44 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 2.1.64
|
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CVE-2026-35603 (GCVE-0-2026-35603)
Vulnerability from cvelistv5 – Published: 2026-04-17 20:38 – Updated: 2026-04-20 14:57
VLAI
EPSS
VEX
Title
Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows
Summary
Claude Code is an agentic coding tool. In versions prior to 2.1.75 on Windows, Claude Code loaded the system-wide default configuration from C:\ProgramData\ClaudeCode\managed-settings.json without validating directory ownership or access permissions. Because the ProgramData directory is writable by non-administrative users by default and the ClaudeCode subdirectory was not pre-created or access-restricted, a low-privileged local user could create this directory and place a malicious configuration file that would be automatically loaded for any user launching Claude Code on the same machine. Exploiting this would have required a shared multi-user Windows system and a victim user to launch Claude Code after the malicious configuration was placed. This issue has been fixed on version 2.1.75.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-20 14:52 UTC
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/anthropics/claude-code/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| anthropics | claude-code |
Affected:
< 2.1.75
|
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"title": "Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows"
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GCVE-1337-2026-000000000… (CVE-2026-7574)
Vulnerability from gna-1337 – Published: 2026-06-23 23:54 – Updated: 2026-06-23 23:54
VLAI
EPSS
VEX
Title
Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use
Summary
Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.1348.0, v1.1617.0, and v1.2278.0) validates only file presence and a version marker string before booting rootfs.img, but does not verify image content integrity at time-of-use. A local attacker with unprivileged code execution as the victim macOS user can modify the VM root filesystem image and have it trusted on subsequent Cowork VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories. The estimated CWE mapping is CWE-353 (Missing Support for Integrity Check).
Severity
8.7 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CNA · AHA (v2.0.3)
CWE
- CWE-353 - Missing support for integrity check
References
2 references
| URL | Tags |
|---|---|
| https://cfp.recon.cx/recon-2026/talk/DZUQYU/ | related |
| https://takeonme.org/gcves/GCVE-1337-2026-0000000… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Anthropic | Claude Desktop Cowork |
Affected:
1.1348.0 , ≤ 1.2278.0
(semver)
|
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"affected": [
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"defaultStatus": "unaffected",
"product": "Claude Desktop Cowork",
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"status": "affected",
"version": "1.1348.0",
"versionType": "semver"
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"credits": [
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"lang": "en",
"type": "finder",
"value": "Todd Manning"
},
{
"lang": "en",
"type": "coordinator",
"value": "todb of AHA!"
}
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"baseSeverity": "HIGH",
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"description": "CWE-353 Missing support for integrity check",
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"type": "CWE"
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