CVE-2026-12565
Full vulnerability record from the local CVENow database.
Description
The unarchive internal module's archive extraction commands perform no code-level validation on extracted file paths, relying entirely on the behavior of external tools (e.g. GNU tar) which varies by platform. While CVE-2025-10284 addressed git-specific RCE vectors, the underlying archive extraction path traversal was never fixed. On systems with GNU tar < 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, many Docker base images), a malicious archive can write files outside the intended extraction directory.
Severity
MEDIUM
CVSS score
5.3
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-06-17 23:17:02.970000
Last modified
2026-10-23 23:10:00.157000
View original CVE JSON
{
"id": "CVE-2026-12565",
"sourceIdentifier": "[email protected]",
"published": "2026-06-17T23:17:02.970",
"lastModified": "2026-10-23T23:10:00.157",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The unarchive internal module's archive extraction commands perform no code-level validation on extracted file paths, relying entirely on the behavior of external tools (e.g. GNU tar) which varies by platform. While CVE-2025-10284 addressed git-specific RCE vectors, the underlying archive extraction path traversal was never fixed. On systems with GNU tar < 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, many Docker base images), a malicious archive can write files outside the intended extraction directory."
},
{
"lang": "es",
"value": "Los comandos de extracción de archivos del módulo interno unarchive no realizan ninguna validación a nivel de código en las rutas de archivo extraídas, dependiendo completamente del comportamiento de herramientas externas (por ejemplo, GNU tar) que varía según la plataforma. Si bien CVE-2025-10284 abordó vectores de RCE específicos de git, el salto de ruta subyacente en la extracción de archivos nunca se solucionó. En sistemas con GNU tar anterior a 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, muchas imágenes base de Docker), un archivo malicioso puede escribir archivos fuera del directorio de extracción previsto."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Black Lantern Security",
"product": "BBOT",
"defaultStatus": "unaffected",
"repo": "https://github.com/blacklanternsecurity/bbot",
"versions": [
{
"version": "2.3.1",
"lessThanOrEqual": "<=2.8.4",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 1.6,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-06-18T12:50:54.389353Z",
"id": "CVE-2026-12565",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
],
"references": [
{
"url": "https://github.com/blacklanternsecurity/bbot/commit/4fb38fd6e",
"source": "[email protected]"
}
]
}