CVE-2026-0669
Full vulnerability record from the local CVENow database.
Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Wikimedia Foundation MediaWiki - CSS extension allows Path Traversal.This issue affects MediaWiki - CSS extension: 1.44, 1.43, 1.39.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
Published
2026-01-07 18:15:53.003000
Last modified
2026-10-26 21:10:00.170000
View original CVE JSON
{
"id": "CVE-2026-0669",
"sourceIdentifier": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
"published": "2026-01-07T18:15:53.003",
"lastModified": "2026-10-26T21:10:00.170",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Wikimedia Foundation MediaWiki - CSS extension allows Path Traversal.This issue affects MediaWiki - CSS extension: 1.44, 1.43, 1.39."
},
{
"lang": "es",
"value": "Limitación Inadecuada de un Nombre de Ruta a un Directorio Restringido (’Salto de Ruta’) vulnerabilidad en la extensión CSS de Wikimedia Foundation MediaWiki permite el salto de ruta. Este problema afecta a la extensión CSS de MediaWiki: 1.44, 1.43, 1.39."
}
],
"affected": [
{
"source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
"affectedData": [
{
"vendor": "Wikimedia Foundation",
"product": "MediaWiki - CSS extension",
"defaultStatus": "unaffected",
"repo": "http://gerrit.wikimedia.org/g/mediawiki/extensions/CSS",
"versions": [
{
"version": "1.44",
"status": "affected"
},
{
"version": "1.43",
"status": "affected"
},
{
"version": "1.39",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-01-07T19:20:56.695860Z",
"id": "CVE-2026-0669",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
],
"configurations": [
{
"operator": "AND",
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:css_project:css:-:*:*:*:*:mediawiki:*:*",
"matchCriteriaId": "931FD1A4-7FD7-41E3-85E2-6B99F5E3BAB5"
}
]
},
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": false,
"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.39.0:-:*:*:*:*:*:*",
"matchCriteriaId": "243E4420-7054-4190-8270-76E09207FC9C"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.43.0:-:*:*:*:*:*:*",
"matchCriteriaId": "65A0A018-AEB0-491D-94C4-C14B7D8A45E7"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.44.0:*:*:*:*:*:*:*",
"matchCriteriaId": "FB02399E-7A9A-4F8C-8031-F4D4DCD82C76"
}
]
}
]
}
],
"references": [
{
"url": "https://gerrit.wikimedia.org/r/q/Ia15bf3f2e5a341868568492a736ac3dbf706c22e",
"source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
"tags": [
"Patch"
]
},
{
"url": "https://phabricator.wikimedia.org/T401526",
"source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc",
"tags": [
"Exploit",
"Issue Tracking"
]
}
]
}