RHSA-2026:94094
Vulnerability from csaf_redhat - Published: 2026-11-02 21:50 - Updated: 2026-11-08 10:56A flaw was found in Billy, an interface filesystem abstraction for Go. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by providing crafted or malformed input. The issue arises from insufficient validation and missing safety mechanisms when processing untrusted repository data and filesystem structures, leading to panics, infinite loops, uncontrolled recursion, or excessive resource consumption.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-tooling-rhel9@sha256:28946a9327b2213d4a8b3f811bd05812d9817775e40430992083a62865a9863d_amd64 | — |
Vendor Fix
fix
Workaround
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-exec-rhel9@sha256:098feaded858a8c9d656a39701b895e32b18c3e4a66693f9724ad6540c829d7e_amd64 | — |
Workaround
|
|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-operator-bundle@sha256:8be6e12b68ee2c93eac759a0d4c30ed7af1e1a33b3c274fdc426f0e7e37d3a3b_amd64 | — |
Workaround
|
|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-rhel9-operator@sha256:67e5fee7bcdab03994518ad25da1a73cc789b361cd3b77a2a25d69c65d21b304_amd64 | — |
Workaround
|
A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-exec-rhel9@sha256:098feaded858a8c9d656a39701b895e32b18c3e4a66693f9724ad6540c829d7e_amd64 | — |
Vendor Fix
fix
Workaround
|
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-operator-bundle@sha256:8be6e12b68ee2c93eac759a0d4c30ed7af1e1a33b3c274fdc426f0e7e37d3a3b_amd64 | — |
Workaround
|
|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-rhel9-operator@sha256:67e5fee7bcdab03994518ad25da1a73cc789b361cd3b77a2a25d69c65d21b304_amd64 | — |
Workaround
|
|
| Unresolved product id: Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-tooling-rhel9@sha256:28946a9327b2213d4a8b3f811bd05812d9817775e40430992083a62865a9863d_amd64 | — |
Workaround
|
A flaw was found in go-git, an extensible Git implementation library. Worktree operations, such as checkout, status, and add, resolve symbolic links within the working tree without proper boundary confinement. This allows a remote attacker to craft a malicious repository containing a symlink, which, when cloned and its worktree operations are used, can lead to reading from or writing to arbitrary files outside the intended working directory. This could result in information disclosure or arbitrary file modification.
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"ids": [
{
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"text": "2483894"
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"notes": [
{
"category": "description",
"text": "A flaw was found in Billy, an interface filesystem abstraction for Go. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by providing crafted or malformed input. The issue arises from insufficient validation and missing safety mechanisms when processing untrusted repository data and filesystem structures, leading to panics, infinite loops, uncontrolled recursion, or excessive resource consumption.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/go-git/go-billy: Billy: Denial of Service via crafted input due to insufficient validation",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is rated as an Important severity issue. The `go-billy` library, a Go filesystem abstraction, is vulnerable to a denial of service when processing crafted or malformed input, such as untrusted repository data or filesystem structures. Insufficient validation and missing safety mechanisms can lead to panics, infinite loops, or excessive resource consumption, potentially impacting the availability of applications that rely on this library.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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]
}
],
"threats": [
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"details": "Important"
}
],
"title": "github.com/go-git/go-billy: Billy: Denial of Service via crafted input due to insufficient validation"
},
{
"cve": "CVE-2026-56852",
"cwe": {
"id": "CWE-835",
"name": "Loop with Unreachable Exit Condition"
},
"discovery_date": "2026-07-21T20:01:56.266823+00:00",
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"ids": [
{
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"text": "2504233"
}
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{
"category": "description",
"text": "A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Important: This flaw in the `golang.org/x/text` library can lead to a denial of service. An attacker could provide specially crafted invalid UTF-8 input to an application using the affected `norm.Iter` functionality, causing it to enter an infinite loop and become unresponsive.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-56852"
},
{
"category": "external",
"summary": "RHBZ#2504233",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2504233"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-56852",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56852"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-56852",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56852"
},
{
"category": "external",
"summary": "https://go.dev/cl/794100",
"url": "https://go.dev/cl/794100"
},
{
"category": "external",
"summary": "https://go.dev/issue/80142",
"url": "https://go.dev/issue/80142"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-5970",
"url": "https://pkg.go.dev/vuln/GO-2026-5970"
}
],
"release_date": "2026-07-21T19:18:59.951000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-11-02T21:50:17+00:00",
"details": "To start using the Web Terminal Operator, install the Web Terminal Operator from OpenShift OperatorHub on OpenShift Container Platform 4.20 or higher.",
"product_ids": [
"Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-exec-rhel9@sha256:098feaded858a8c9d656a39701b895e32b18c3e4a66693f9724ad6540c829d7e_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:94094"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
"product_ids": [
"Red Hat Web Terminal 1.15:registry.redhat.io/web-terminal/web-terminal-exec-rhel9@sha256:098feaded858a8c9d656a39701b895e32b18c3e4a66693f9724ad6540c829d7e_amd64",
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]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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]
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"details": "Important"
}
],
"title": "golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input"
},
{
"cve": "CVE-2026-71556",
"cwe": {
"id": "CWE-59",
"name": "Improper Link Resolution Before File Access"
},
"discovery_date": "2026-08-07T16:51:14.251077+00:00",
"flags": [
{
"label": "vulnerable_code_not_present",
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]
}
],
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2512562"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in go-git, an extensible Git implementation library. Worktree operations, such as checkout, status, and add, resolve symbolic links within the working tree without proper boundary confinement. This allows a remote attacker to craft a malicious repository containing a symlink, which, when cloned and its worktree operations are used, can lead to reading from or writing to arbitrary files outside the intended working directory. This could result in information disclosure or arbitrary file modification.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/go-git/go-git/v5: go-git: Arbitrary file read/write via symbolic link resolution",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "go-git is a pure-Go implementation of Git. During worktree operations (checkout, status, add), go-git resolves symbolic links without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause a consuming application to read from or write to files outside the intended working directory when that repository is cloned and its worktree operations are used. Exploitation requires the application to clone an attacker-controlled repository and then perform worktree operations against it; applications that only process trusted repositories are not exposed. Red Hat rates the impact of this flaw as Important.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"url": "https://access.redhat.com/security/cve/CVE-2026-71556"
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"summary": "RHBZ#2512562",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512562"
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{
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"url": "https://www.cve.org/CVERecord?id=CVE-2026-71556"
},
{
"category": "external",
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},
{
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"summary": "https://github.com/go-git/go-git/commit/008a78f2dd86f52544ddff8b8e8ddeecdf3f7aab",
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},
{
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},
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},
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"release_date": "2026-08-07T16:37:40.058000+00:00",
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"date": "2026-11-02T21:50:17+00:00",
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},
{
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"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
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"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"title": "github.com/go-git/go-git/v5: go-git: Arbitrary file read/write via symbolic link resolution"
}
]
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.