Common Weakness Enumeration
CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
2191 vulnerabilities reference this CWE, most recent first.
CVE-2026-14891 (GCVE-0-2026-14891)
Vulnerability from cvelistv5 – Published: 2026-07-08 20:09 – Updated: 2026-07-09 03:55
VLAI
EPSS
VEX
Title
Nomad vulnerable to sandbox escape in Docker task driver
Summary
HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.
Severity
8.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 00:00 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access (Link Following)
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| HashiCorp | Nomad |
Affected:
0.4.1 , < 2.0.4
(semver)
|
|
| HashiCorp | Nomad Enterprise |
Affected:
0.4.1 , < 2.0.4
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-14891",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-08T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-09T03:55:54.984Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"64 bit",
"32 bit",
"x86",
"ARM",
"MacOS",
"Windows",
"Linux"
],
"product": "Nomad",
"repo": "https://github.com/hashicorp/nomad",
"vendor": "HashiCorp",
"versions": [
{
"lessThan": "2.0.4",
"status": "affected",
"version": "0.4.1",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"platforms": [
"64 bit",
"32 bit",
"x86",
"ARM",
"MacOS",
"Windows",
"Linux"
],
"product": "Nomad Enterprise",
"repo": "https://github.com/hashicorp/nomad",
"vendor": "HashiCorp",
"versions": [
{
"changes": [
{
"at": "1.11.8",
"status": "unaffected"
},
{
"at": "1.10.14",
"status": "unaffected"
}
],
"lessThan": "2.0.4",
"status": "affected",
"version": "0.4.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "This issue was reported to HashiCorp by Volkan Kutal, GitHub handle @KutalVolkan."
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eHashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.\u003c/p\u003e\u003cbr/\u003e"
}
],
"value": "HashiCorp Nomad and Nomad Enterprise are vulnerable to a sandbox escape in the Docker task driver that may allow a job submitter to bind-mount a host path into a container even when volume bind mounts are disabled, potentially leading to reading and writing files on the host. This vulnerability, CVE-2026-14891, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14."
}
],
"impacts": [
{
"capecId": "CAPEC-132",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-132: Symlink Attack"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (Link Following)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-08T20:09:05.752Z",
"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"shortName": "HashiCorp"
},
"references": [
{
"url": "https://discuss.hashicorp.com/t/hcsec-2026-21-nomad-vulnerable-to-sandbox-escape-in-docker-task-driver/77561"
}
],
"source": {
"advisory": "HCSEC-2026-21",
"discovery": "EXTERNAL"
},
"title": "Nomad vulnerable to sandbox escape in Docker task driver"
}
},
"cveMetadata": {
"assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"assignerShortName": "HashiCorp",
"cveId": "CVE-2026-14891",
"datePublished": "2026-07-08T20:09:05.752Z",
"dateReserved": "2026-07-06T18:05:48.932Z",
"dateUpdated": "2026-07-09T03:55:54.984Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-14699 (GCVE-0-2026-14699)
Vulnerability from cvelistv5 – Published: 2026-07-05 03:15 – Updated: 2026-07-06 16:21
VLAI
EPSS
VEX
Title
zcaceres markdownify-mcp Markdownify.ts assertPathAllowed symlink
Summary
A weakness has been identified in zcaceres markdownify-mcp up to 1.1.0. The affected element is the function assertPathAllowed of the file src/Markdownify.ts. Executing a manipulation can lead to symlink following. The attack can only be executed locally. The pull request to fix this issue awaits acceptance.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 16:20 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376295 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/376295/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-14699 | third-party-advisory |
| https://vuldb.com/submit/846864 | third-party-advisory |
| https://github.com/zcaceres/markdownify-mcp/issues/108 | issue-tracking |
| https://github.com/zcaceres/markdownify-mcp/pull/109 | issue-trackingpatch |
| https://github.com/zcaceres/markdownify-mcp/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zcaceres | markdownify-mcp |
Affected:
1.0
Affected: 1.1.0 cpe:2.3:a:zcaceres:markdownify-mcp:*:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-14699",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-06T16:20:52.255822Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-06T16:21:02.273Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:zcaceres:markdownify-mcp:*:*:*:*:*:*:*:*"
],
"product": "markdownify-mcp",
"vendor": "zcaceres",
"versions": [
{
"status": "affected",
"version": "1.0"
},
{
"status": "affected",
"version": "1.1.0"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Dem000000 (VulDB User)"
},
{
"lang": "en",
"type": "coordinator",
"value": "VulDB CNA Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "A weakness has been identified in zcaceres markdownify-mcp up to 1.1.0. The affected element is the function assertPathAllowed of the file src/Markdownify.ts. Executing a manipulation can lead to symlink following. The attack can only be executed locally. The pull request to fix this issue awaits acceptance."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 3.3,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 3.3,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 1.7,
"vectorString": "AV:L/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-61",
"description": "Symlink Following",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "Link Following",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-05T03:15:08.112Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-376295 | zcaceres markdownify-mcp Markdownify.ts assertPathAllowed symlink",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/vuln/376295"
},
{
"name": "VDB-376295 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/vuln/376295/cti"
},
{
"name": "CVE-2026-14699 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/cve/CVE-2026-14699"
},
{
"name": "Submit #846864 | zcaceres markdownify-mcp / mcp-markdownify-server up to 1.1.0 CWE-59: Improper Link Resolution Before File Access (\u0027Link Follo",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/submit/846864"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/zcaceres/markdownify-mcp/issues/108"
},
{
"tags": [
"issue-tracking",
"patch"
],
"url": "https://github.com/zcaceres/markdownify-mcp/pull/109"
},
{
"tags": [
"product"
],
"url": "https://github.com/zcaceres/markdownify-mcp/"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-07-04T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2026-07-04T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2026-07-04T07:27:46.000Z",
"value": "VulDB entry last update"
}
],
"title": "zcaceres markdownify-mcp Markdownify.ts assertPathAllowed symlink"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2026-14699",
"datePublished": "2026-07-05T03:15:08.112Z",
"dateReserved": "2026-07-04T05:22:43.104Z",
"dateUpdated": "2026-07-06T16:21:02.273Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-14361 (GCVE-0-2026-14361)
Vulnerability from cvelistv5 – Published: 2026-07-08 20:11 – Updated: 2026-07-08 20:37
VLAI
EPSS
VEX
Title
Consul-template is vulnerable to path redirection in writeToFile through symlink attack
Summary
The consul-template library before version 0.42.1 is vulnerable to a path redirection issue in the writeToFile template helper that may allow template output to be written outside the intended directory or to overwrite an existing file. This vulnerability (CVE-2026-14361) is fixed in consul-template 0.42.1.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 20:37 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access (Link Following)
Assigner
References
1 reference
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-14361",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-08T20:37:49.249358Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-08T20:37:56.570Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"64 bit",
"32 bit",
"x86",
"ARM",
"MacOS",
"Windows",
"Linux"
],
"product": "Tooling",
"repo": "https://github.com/hashicorp/consul-template",
"vendor": "HashiCorp",
"versions": [
{
"lessThan": "0.42.1",
"status": "affected",
"version": "0.1.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "This issue was reported to HashiCorp by Mohamed Abdelaal (0xmrma)."
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe consul-template library before version 0.42.1 is vulnerable to a path redirection issue in the writeToFile template helper that may allow template output to be written outside the intended directory or to overwrite an existing file. This vulnerability (CVE-2026-14361) is fixed in consul-template 0.42.1.\u003c/p\u003e\u003cbr/\u003e"
}
],
"value": "The consul-template library before version 0.42.1 is vulnerable to a path redirection issue in the writeToFile template helper that may allow template output to be written outside the intended directory or to overwrite an existing file. This vulnerability (CVE-2026-14361) is fixed in consul-template 0.42.1."
}
],
"impacts": [
{
"capecId": "CAPEC-132",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-132: Symlink Attack"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (Link Following)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-08T20:11:32.799Z",
"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"shortName": "HashiCorp"
},
"references": [
{
"url": "https://discuss.hashicorp.com/t/hcsec-2026-20-consul-template-vulnerable-to-path-redirections-in-writetofile/77559"
}
],
"source": {
"advisory": "HCSEC-2026-20",
"discovery": "EXTERNAL"
},
"title": "Consul-template is vulnerable to path redirection in writeToFile through symlink attack"
}
},
"cveMetadata": {
"assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
"assignerShortName": "HashiCorp",
"cveId": "CVE-2026-14361",
"datePublished": "2026-07-08T20:11:32.799Z",
"dateReserved": "2026-07-01T19:00:00.428Z",
"dateUpdated": "2026-07-08T20:37:56.570Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-13268 (GCVE-0-2026-13268)
Vulnerability from cvelistv5 – Published: 2026-07-29 19:08 – Updated: 2026-07-30 13:41
VLAI
EPSS
VEX
Title
G DATA Total Security Backup Service Link Following Local Privilege Escalation Vulnerability
Summary
G DATA Total Security Backup Service Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of G DATA Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Backup Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-28665.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 13:40 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| G DATA | Total Security |
Affected:
25.5.19.439
|
Date Public
2026-07-15 21:34
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-13268",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-30T13:40:54.965909Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-30T13:41:40.892Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Total Security",
"vendor": "G DATA",
"versions": [
{
"status": "affected",
"version": "25.5.19.439"
}
]
}
],
"dateAssigned": "2026-06-24T21:22:42.529Z",
"datePublic": "2026-07-15T21:34:11.402Z",
"descriptions": [
{
"lang": "en",
"value": "G DATA Total Security Backup Service Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of G DATA Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the Backup Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-28665."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-29T19:08:46.783Z",
"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"shortName": "zdi"
},
"references": [
{
"name": "ZDI-26-432",
"tags": [
"x_research-advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-432/"
}
],
"source": {
"lang": "en",
"value": "Anonymous"
},
"title": "G DATA Total Security Backup Service Link Following Local Privilege Escalation Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"assignerShortName": "zdi",
"cveId": "CVE-2026-13268",
"datePublished": "2026-07-29T19:08:46.783Z",
"dateReserved": "2026-06-24T21:22:42.496Z",
"dateUpdated": "2026-07-30T13:41:40.892Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-12567 (GCVE-0-2026-12567)
Vulnerability from cvelistv5 – Published: 2026-06-17 21:51 – Updated: 2026-06-18 12:50
VLAI
EPSS
VEX
Title
Symlink-following arbitrary write via github_workflows module
Summary
The github_workflows module constructs local directory paths from user-controlled repository names without validating for symlinks. A local attacker sharing the scan directory can plant a symlink at the predictable output path, causing workflow data to be written to an attacker-chosen location.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 12:50 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Black Lantern Security | BBOT |
Affected:
2.0.0 , ≤ <=2.8.4
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12567",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-18T12:50:06.432373Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-18T12:50:13.202Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "BBOT",
"repo": "https://github.com/blacklanternsecurity/bbot",
"vendor": "Black Lantern Security",
"versions": [
{
"lessThanOrEqual": "\u003c=2.8.4",
"status": "affected",
"version": "2.0.0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The github_workflows module constructs local directory paths from user-controlled repository names without validating for symlinks. A local attacker sharing the scan directory can plant a symlink at the predictable output path, causing workflow data to be written to an attacker-chosen location."
}
],
"value": "The github_workflows module constructs local directory paths from user-controlled repository names without validating for symlinks. A local attacker sharing the scan directory can plant a symlink at the predictable output path, causing workflow data to be written to an attacker-chosen location."
}
],
"impacts": [
{
"capecId": "CAPEC-132",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-132 Symlink Attack"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 2.2,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59 Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-17T21:51:35.593Z",
"orgId": "27b6da8a-f51d-48d9-9eef-9b7f3405d20d",
"shortName": "BLSOPS"
},
"references": [
{
"url": "https://github.com/blacklanternsecurity/bbot/commit/16d9c42b6"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Symlink-following arbitrary write via github_workflows module",
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "27b6da8a-f51d-48d9-9eef-9b7f3405d20d",
"assignerShortName": "BLSOPS",
"cveId": "CVE-2026-12567",
"datePublished": "2026-06-17T21:51:35.593Z",
"dateReserved": "2026-06-17T21:49:05.331Z",
"dateUpdated": "2026-06-18T12:50:13.202Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-12503 (GCVE-0-2026-12503)
Vulnerability from cvelistv5 – Published: 2026-07-24 13:57 – Updated: 2026-07-24 14:57
VLAI
EPSS
VEX
Title
Loytec LINX firmware: Improper Link Resolution in /usr/bin/larm_starter
Summary
Improper Link Resolution (CWE-59) in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 14:57 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.loytec.com/support/product-security/a… | vendor-advisory |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Loytec | LIP-ME20xC |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-INX |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-GATE |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-ROC |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-IOB |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-DALI |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-VIS |
Affected:
0 , ≤ 8.4.16
(custom)
|
|
| Loytec | L-PAD |
Affected:
0 , ≤ 8.4.16
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12503",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-24T14:57:37.633031Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-24T14:57:47.202Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "LIP-ME20xC",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-INX",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-GATE",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-ROC",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-IOB",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-DALI",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-VIS",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "L-PAD",
"vendor": "Loytec",
"versions": [
{
"lessThanOrEqual": "8.4.16",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Daniel Hulliger, armasuisse CYD Campus"
},
{
"lang": "en",
"type": "finder",
"value": "Damian Pfammatter, armasuisse CYD Campus"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Link Resolution (CWE-59)\u0026nbsp;in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`."
}
],
"value": "Improper Link Resolution (CWE-59)\u00a0in `/usr/bin/larm_starter` in Loytec L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an authenticated `larmapp` attacker to make `/etc/passwd` writable by the `larmapp` group (leading to root privilege escalation) via a symlink attack on `/etc/lighttpd/ssl/server.pem`."
}
],
"impacts": [
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
},
{
"capecId": "CAPEC-233",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-233 Privilege Escalation"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 9.2,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59 Improper link resolution before file access (\u0027link following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-24T13:57:56.691Z",
"orgId": "455daabc-a392-441d-aa46-37d35189897c",
"shortName": "NCSC.ch"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.loytec.com/support/product-security/advisories/8520-dibt-cve-20260526-0002-symlink-following-in-chown-chmod-critical"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Upgrade to firmware 8.4.18."
}
],
"value": "Upgrade to firmware 8.4.18."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Loytec LINX firmware: Improper Link Resolution in /usr/bin/larm_starter",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"assignerShortName": "NCSC.ch",
"cveId": "CVE-2026-12503",
"datePublished": "2026-07-24T13:57:56.691Z",
"dateReserved": "2026-06-17T09:48:11.206Z",
"dateUpdated": "2026-07-24T14:57:47.202Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-12410 (GCVE-0-2026-12410)
Vulnerability from cvelistv5 – Published: 2026-08-05 14:14 – Updated: 2026-08-05 15:32
VLAI
EPSS
VEX
Title
CCleaner local privilege escalation via link following on uninstall
Summary
Link following vulnerability in the Uninstaller component in CCleaner prior to 7.10.1464 on Windows allows a local, low-privileged attacker to escalate privileges to SYSTEM via a symlink/junction created during application uninstallation, which CCleaner follows when deleting the application's data folder with elevated integrity.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:32 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gen Digital | CCleaner |
Affected:
0 , < 7.10.1464
(custom)
|
Date Public
2026-08-05 00:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12410",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-05T15:32:18.827418Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T15:32:26.710Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"Windows"
],
"product": "CCleaner",
"vendor": "Gen Digital",
"versions": [
{
"lessThan": "7.10.1464",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Anonymous working with TrendAI Zero Day Initiative"
}
],
"datePublic": "2026-08-05T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Link following vulnerability in the Uninstaller component in CCleaner prior to 7.10.1464 on Windows allows a local, low-privileged attacker to escalate privileges to SYSTEM via a symlink/junction created during application uninstallation, which CCleaner follows when deleting the application\u0027s data folder with elevated integrity."
}
],
"value": "Link following vulnerability in the Uninstaller component in CCleaner prior to 7.10.1464 on Windows allows a local, low-privileged attacker to escalate privileges to SYSTEM via a symlink/junction created during application uninstallation, which CCleaner follows when deleting the application\u0027s data folder with elevated integrity."
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "Successful exploitation allows a local, low-privileged attacker to delete arbitrary files/folders with SYSTEM integrity by replacing the uninstall target folder with a symlink/junction, ultimately achieving local privilege escalation."
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T14:14:09.678Z",
"orgId": "dbd8429d-f261-4b1e-94cc-ae3132817e2e",
"shortName": "GEN"
},
"references": [
{
"url": "https://www.gendigital.com/us/en/contact-us/security-advisories/"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Upgrade to CCleaner \u003cstrong\u003e7.10.1464\u003c/strong\u003e or later on Windows. All builds at or above 7.10.1464 include the fix."
}
],
"value": "Upgrade to CCleaner 7.10.1464 or later on Windows. All builds at or above 7.10.1464 include the fix."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CCleaner local privilege escalation via link following on uninstall",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "dbd8429d-f261-4b1e-94cc-ae3132817e2e",
"assignerShortName": "GEN",
"cveId": "CVE-2026-12410",
"datePublished": "2026-08-05T14:14:09.678Z",
"dateReserved": "2026-06-16T15:03:55.873Z",
"dateUpdated": "2026-08-05T15:32:26.710Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-12391 (GCVE-0-2026-12391)
Vulnerability from cvelistv5 – Published: 2026-07-16 12:17 – Updated: 2026-07-16 13:28
VLAI
EPSS
VEX
Title
ubuntu-pro-client Local Privilege Escalation and Information Disclosure via Symlink Arbitrary File Read in collect-logs
Summary
An insecure symlink following vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools) within the pro collect-logs command framework. The utility creates or utilizes predictable temporary file paths or user-accessible log directories when gathering diagnostic information without verifying the file type or ownership. An unprivileged local attacker can exploit this behavior by creating a symbolic link (symlink) at a predictable destination path pointing to an arbitrary, root-readable file (such as /etc/shadow or private files within /root). When a root administrator or operator subsequently executes the pro collect-logs command, the tool follows the user-controlled symlink, reads the target file, and compresses its contents into the resulting diagnostic support archive. Because the output archive remains readable by the unprivileged user, the attacker can extract and read the sensitive root-owned files, leading to a complete information disclosure of system secrets.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-16 13:20 UTC
CWE
- CWE-59 - Improper link resolution before file access ('link following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://ubuntu.com/security/CVE-2026-12391 | vdb-entry |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | ubuntu-pro-client (ubuntu-advantage-tools) |
Affected:
0 , < 37.3
(python)
|
|
| Canonical | Ubuntu 26.04 LTS |
Unaffected:
37.2ubuntu0.1
(dpkg)
|
|
| Canonical | Ubuntu 24.04 LTS |
Unaffected:
37.2ubuntu~24.04.1
(dpkg)
|
|
| Canonical | Ubuntu 22.04 LTS |
Unaffected:
37.2ubuntu~22.04.1
(dpkg)
|
|
| Canonical | Ubuntu 20.04 LTS |
Unaffected:
37.1ubuntu0~20.04.1
(dpkg)
|
|
| Canonical | Ubuntu 18.04 LTS |
Unaffected:
37.1ubuntu0~18.04.1
(dpkg)
|
|
| Canonical | Ubuntu 16.04 LTS |
Unaffected:
37.1ubuntu0~16.04.1
(dpkg)
|
Date Public
2026-07-16 12:00
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12391",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-16T13:20:30.714803Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-16T13:28:19.156Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/canonical/",
"defaultStatus": "unaffected",
"packageName": "ubuntu-pro-client",
"platforms": [
"Linux"
],
"product": "ubuntu-pro-client (ubuntu-advantage-tools)",
"repo": "https://github.com/canonical/ubuntu-pro-client",
"vendor": "Canonical",
"versions": [
{
"lessThan": "37.3",
"status": "affected",
"version": "0",
"versionType": "python"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/resolute",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 26.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.2ubuntu0.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/noble",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 24.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.2ubuntu~24.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/jammy",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 22.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.2ubuntu~22.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/focal",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 20.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.1ubuntu0~20.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/bionic",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 18.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.1ubuntu0~18.04.1",
"versionType": "dpkg"
}
]
},
{
"collectionURL": "https://launchpad.net/ubuntu/xenial",
"defaultStatus": "affected",
"packageName": "ubuntu-advantage-tools",
"platforms": [
"Linux"
],
"product": "Ubuntu 16.04 LTS",
"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
"vendor": "Canonical",
"versions": [
{
"status": "unaffected",
"version": "37.1ubuntu0~16.04.1",
"versionType": "dpkg"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Mateusz Gierblinski"
}
],
"datePublic": "2026-07-16T12:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "An insecure symlink following vulnerability exists in Canonical\u003cbr\u003eubuntu-pro-client (formerly ubuntu-advantage-tools) within the\u003cbr\u003epro collect-logs command framework. The utility creates or utilizes\u003cbr\u003epredictable temporary file paths or user-accessible log directories when\u003cbr\u003egathering diagnostic information without verifying the file type or ownership.\u003cbr\u003eAn unprivileged local attacker can exploit this behavior by creating a\u003cbr\u003esymbolic link (symlink) at a predictable destination path pointing to an\u003cbr\u003earbitrary, root-readable file (such as /etc/shadow or private files within\u003cbr\u003e/root).\u003cbr\u003eWhen a root administrator or operator subsequently executes the\u003cbr\u003epro collect-logs command, the tool follows the user-controlled symlink, reads\u003cbr\u003ethe target file, and compresses its contents into the resulting diagnostic\u003cbr\u003esupport archive. Because the output archive remains readable by the\u003cbr\u003eunprivileged user, the attacker can extract and read the sensitive root-owned\u003cbr\u003efiles, leading to a complete information disclosure of system secrets.\u003cbr\u003e"
}
],
"value": "An insecure symlink following vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools) within the pro collect-logs command framework. The utility creates or utilizes predictable temporary file paths or user-accessible log directories when gathering diagnostic information without verifying the file type or ownership. An unprivileged local attacker can exploit this behavior by creating a symbolic link (symlink) at a predictable destination path pointing to an arbitrary, root-readable file (such as /etc/shadow or private files within /root). When a root administrator or operator subsequently executes the pro collect-logs command, the tool follows the user-controlled symlink, reads the target file, and compresses its contents into the resulting diagnostic support archive. Because the output archive remains readable by the unprivileged user, the attacker can extract and read the sensitive root-owned files, leading to a complete information disclosure of system secrets."
}
],
"impacts": [
{
"capecId": "CAPEC-132",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-132 Symlink Attack"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59 Improper link resolution before file access (\u0027link following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-16T12:17:01.094Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"vdb-entry"
],
"url": "https://ubuntu.com/security/CVE-2026-12391"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "ubuntu-pro-client Local Privilege Escalation and Information Disclosure via Symlink Arbitrary File Read in collect-logs"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-12391",
"datePublished": "2026-07-16T12:17:01.094Z",
"dateReserved": "2026-06-16T12:15:12.153Z",
"dateUpdated": "2026-07-16T13:28:19.156Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-12036 (GCVE-0-2026-12036)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:52 – Updated: 2026-08-13 16:05
VLAI
EPSS
VEX
Summary
An improper link following vulnerability was reported in the VantageCoreAddin for Lenovo Vantage and Lenovo Commercial Vantage that could allow a local authenticated user to perform an arbitrary file deletion with elevated privileges.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 16:04 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.lenovo.com/us/en/product_security… | vendor-advisory |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-12036",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-13T16:04:33.789789Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T16:05:20.251Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "VantageCoreAddin",
"product": "Vantage",
"vendor": "Lenovo",
"versions": [
{
"lessThan": "1.1.0.51",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lenovo:vantage:*:*:*:*:*:*:*:*",
"versionEndExcluding": "1.1.0.51",
"versionStartIncluding": "0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Lenovo thanks cy for reporting this vulnerability."
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "An improper link following vulnerability was reported in the VantageCoreAddin for Lenovo Vantage and Lenovo Commercial Vantage that could allow a local authenticated user to perform an arbitrary file deletion with elevated privileges."
}
],
"value": "An improper link following vulnerability was reported in the VantageCoreAddin for Lenovo Vantage and Lenovo Commercial Vantage that could allow a local authenticated user to perform an arbitrary file deletion with elevated privileges."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T14:52:27.799Z",
"orgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
"shortName": "lenovo"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://support.lenovo.com/us/en/product_security/LEN-223723"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update VantageCoreAddin to version 1.1.0.51 or later. VantageCoreAddin is updated automatically."
}
],
"value": "Update VantageCoreAddin to version 1.1.0.51 or later. VantageCoreAddin is updated automatically."
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 1.0.0-beta"
}
}
},
"cveMetadata": {
"assignerOrgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
"assignerShortName": "lenovo",
"cveId": "CVE-2026-12036",
"datePublished": "2026-08-13T14:52:27.799Z",
"dateReserved": "2026-06-11T18:45:15.709Z",
"dateUpdated": "2026-08-13T16:05:20.251Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-11940 (GCVE-0-2026-11940)
Vulnerability from cvelistv5 – Published: 2026-06-23 16:04 – Updated: 2026-08-13 00:28
VLAI
EPSS
VEX
Title
tarfile extraction filter bypass allows escaping the destination directory
Summary
tarfile.extractall() with the 'data' or 'tar'
filter could be bypassed by a crafted archive where a hardlink
references a symlink stored at a deeper name than the hardlink itself.
The extraction fallback validated the symlink at it's archived location
but recreated it at the hardlink's shallower
path, letting a relative
target the filter judged contained escape the destination directory.
This allowed a malicious tar archive to create a symlink pointing
outside the destination, enabling out-of-destination file reads or
writes. This was an incomplete fix of CVE-2025-4330.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 17:57 UTC
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.21
(python)
Affected: 3.11.0 , < 3.11.16 (python) Affected: 3.12.0 , < 3.12.14 (python) Affected: 3.13.0 , < 3.13.15 (python) Affected: 3.14.0 , < 3.14.7 (python) Affected: 3.15.0a1 , < 3.15.0b4 (python) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-11940",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T17:57:25.652265Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-23T17:57:32.525Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "CPython",
"repo": "https://github.com/python/cpython",
"vendor": "Python Software Foundation",
"versions": [
{
"lessThan": "3.10.21",
"status": "affected",
"version": "0",
"versionType": "python"
},
{
"lessThan": "3.11.16",
"status": "affected",
"version": "3.11.0",
"versionType": "python"
},
{
"lessThan": "3.12.14",
"status": "affected",
"version": "3.12.0",
"versionType": "python"
},
{
"lessThan": "3.13.15",
"status": "affected",
"version": "3.13.0",
"versionType": "python"
},
{
"lessThan": "3.14.7",
"status": "affected",
"version": "3.14.0",
"versionType": "python"
},
{
"lessThan": "3.15.0b4",
"status": "affected",
"version": "3.15.0a1",
"versionType": "python"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Haruki Oyama (https://github.com/harukioya)"
},
{
"lang": "en",
"type": "coordinator",
"value": "Stan Ulbrych (https://github.com/StanFromIreland)"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Petr Viktorin (https://github.com/encukou)"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"type": "text/html",
"value": "\u003cspan\u003etarfile.extractall()\u003c/span\u003e with the \u003cspan\u003e\u0027data\u0027\u003c/span\u003e or \u003cspan\u003e\u0027tar\u0027\u003c/span\u003e\n filter could be bypassed by a crafted archive where a hardlink \nreferences a symlink stored at a deeper name than the hardlink itself.\u0026nbsp; \nThe extraction fallback validated the symlink at it\u0027s archived location \nbut recreated it at the hardlink\u0027s shallower\u003cbr\u003epath, letting a relative\n target the filter judged contained escape the destination directory.\u0026nbsp; \nThis allowed a malicious tar archive to create a symlink pointing \noutside the destination, enabling out-of-destination file reads or \nwrites. This was an incomplete fix of CVE-2025-4330."
}
],
"value": "tarfile.extractall() with the \u0027data\u0027 or \u0027tar\u0027\n filter could be bypassed by a crafted archive where a hardlink \nreferences a symlink stored at a deeper name than the hardlink itself.\u00a0 \nThe extraction fallback validated the symlink at it\u0027s archived location \nbut recreated it at the hardlink\u0027s shallower\npath, letting a relative\n target the filter judged contained escape the destination directory.\u00a0 \nThis allowed a malicious tar archive to create a symlink pointing \noutside the destination, enabling out-of-destination file reads or \nwrites. This was an incomplete fix of CVE-2025-4330."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-59",
"description": "CWE-59",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T00:28:51.345Z",
"orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"shortName": "PSF"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/pull/151559"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/LD6QIISNQFQYOIEPJNEUIPV7S3V76FZH/"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/python/cpython/issues/151558"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/27dd970bf6b17ebca7c8ed486a40ab043ed7af8f"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/672825e2f36a57e173959b0d9d409d4560dab8df"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/771d12dda5140313db0ac550292987975651bbde"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/79c06bd5c6afa3c440d50faf7ee1b147c8832b4c"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/be13e86f6b9788a6f4d0419dffef72cbae5865c9"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/e5fdbd8d5aa923bd9111b112ea73bd6ec7c47877"
},
{
"tags": [
"patch"
],
"url": "https://github.com/python/cpython/commit/0f852b3f07dd8e71e40326a51c02afbf16a42cc5"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "tarfile extraction filter bypass allows escaping the destination directory",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
"assignerShortName": "PSF",
"cveId": "CVE-2026-11940",
"datePublished": "2026-06-23T16:04:17.321Z",
"dateReserved": "2026-06-10T19:50:59.923Z",
"dateUpdated": "2026-08-13T00:28:51.345Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.