CVE-2025-67479Network attack vector

Reserved data-attribute injection via magic word expansion

Published Feb 3, 2026 · Updated Feb 3, 2026

Input validation bypass in MediaWiki and Cite before 1.39.14, 1.43.4, and 1.44.1 allows remote attackers to inject reserved data attributes. The legacy parser expands underscore magic-word syntax after Sanitizer.php validates data-* names, allowing a rejected name to become a reserved attribute. Exploitation requires attacker-controlled wikitext to reach the legacy parser; the vendor documents no direct confidentiality, integrity, or availability impact.

CVSS severityUnavailable
Unscored
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Input validation bypass in MediaWiki and Cite before 1.39.14, 1.43.4, and 1.44.1 allows remote attackers to inject reserved data attributes. The legacy parser expands underscore magic-word syntax after Sanitizer.php validates data-* names, allowing a rejected name to become a reserved attribute. Exploitation requires attacker-controlled wikitext to reach the legacy parser; the vendor documents no direct confidentiality, integrity, or availability impact.

The record

CVE
CVE-2025-67479
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <1.39.14, 1.43.4, 1.44.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=* <1.39.14, 1.43.4, 1.44.1
Wikimedia Foundation · Citeversion=* <1.39.14, 1.43.4, 1.44.1

Published CVSS scores

0.0Wikimedia FoundationCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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