Vulnerability-Lookup

CVE-2026-0669 (GCVE-0-2026-0669)

Vulnerability from cvelistv5 – Published: 2026-01-07 17:46 – Updated: 2026-01-07 19:21

Title

Path Traversal vulnerability in CSS extension on certain web servers

Summary

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

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-07 19:20 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

wikimedia-foundation mitre root

References

2 references

URL	Tags
https://phabricator.wikimedia.org/T401526
https://gerrit.wikimedia.org/r/q/Ia15bf3f2e5a3418…

Impacted products

1 product

Vendor	Product	Version	CPE status
Wikimedia Foundation	MediaWiki - CSS extension	Affected: 1.44 Affected: 1.43 Affected: 1.39	guessed

Credits

Radman Siddiki

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-0669

Vulnerability from fkie_nvd - Published: 2026-01-07 18:15 - Updated: 2026-06-17 10:11

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://gerrit.wikimedia.org/r/q/Ia15bf3f2e5a341868568492a736ac3dbf706c22e	Patch
	c4f26cc8-17ff-4c99-b5e2-38fc1793eacc	https://phabricator.wikimedia.org/T401526	Exploit, Issue Tracking

Impacted products

Vendor	Product	Version
css_project	css	-
mediawiki	mediawiki	1.39.0
mediawiki	mediawiki	1.43.0
mediawiki	mediawiki	1.44.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "MediaWiki - CSS extension",
          "repo": "http://gerrit.wikimedia.org/g/mediawiki/extensions/CSS",
          "vendor": "Wikimedia Foundation",
          "versions": [
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              "status": "affected",
              "version": "1.44"
            },
            {
              "status": "affected",
              "version": "1.43"
            },
            {
              "status": "affected",
              "version": "1.39"
            }
          ]
        }
      ],
      "source": "c4f26cc8-17ff-4c99-b5e2-38fc1793eacc"
    }
  ],
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  ],
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  "lastModified": "2026-06-17T10:11:10.703",
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GHSA-78QJ-MXW5-P7QP

Vulnerability from github – Published: 2026-01-07 18:30 – Updated: 2026-01-07 21:31

Details

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-0669"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-07T18:15:53Z",
    "severity": "HIGH"
  },
  "details": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in Wikimedia Foundation MediaWiki - CSS extension allows Path Traversal.This issue affects MediaWiki - CSS extension: 1.44, 1.43, 1.39.",
  "id": "GHSA-78qj-mxw5-p7qp",
  "modified": "2026-01-07T21:31:55Z",
  "published": "2026-01-07T18:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0669"
    },
    {
      "type": "WEB",
      "url": "https://gerrit.wikimedia.org/r/q/Ia15bf3f2e5a341868568492a736ac3dbf706c22e"
    },
    {
      "type": "WEB",
      "url": "https://phabricator.wikimedia.org/T401526"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-0035

Vulnerability from csaf_certbund - Published: 2026-01-07 23:00 - Updated: 2026-01-07 23:00

Summary

MediaWiki Erweiterungen: Mehrere Schwachstellen

Severity

Mittel

Scope

3 vulnerabilities in this advisory, including CVE-2026-0669.

CVE-2026-0669

Known affected: 1 product

Open the full advisory

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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.

Action not permitted

CVE-2026-0669 (GCVE-0-2026-0669)

FKIE_CVE-2026-0669

GHSA-78QJ-MXW5-P7QP

WID-SEC-W-2026-0035

Tags

Sightings

Nomenclature

Related by attack behaviour