Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/ImportableOldRevisionImporter.Php.

This issue affects MediaWiki: from * before 1.44.3, 1.45.1.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00018.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Wikimedia Foundation MediaWiki unaffected
Version Status Constraints
* affected
< 1.44.3, 1.45.1

No data.

No data.

Vendor Product Confidence Versions
Mediawiki Mediawiki — —
Wikimedia Mediawiki — —

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Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2025-67476 cve-icon
https://phabricator.wikimedia.org/T405859 cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-67476 cve-icon
History

Wed, 04 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia mediawiki
Vendors & Products Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia mediawiki

Wed, 04 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-201
References
Metrics threat_severity

None

 cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

threat_severity

Low

Tue, 03 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 03 Feb 2026 13:15:00 +0000

Type Values Removed Values Added
Description Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Import/ImportableOldRevisionImporter.Php. This issue affects MediaWiki: from * before 1.44.3, 1.45.1.
Title Importing leaks IP address of importer via EventStreams
References
Metrics cvssV4_0

{'score': 1.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U'}
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-03-02T17:45:36.993Z

Reserved: 2025-12-08T17:51:48.871Z

Link: CVE-2025-67476

cve-icon Vulnrichment

Updated: 2026-02-03T15:26:17.935Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-03T02:16:08.590

Modified: 2026-02-03T16:44:03.343

Link: CVE-2025-67476

cve-icon Redhat

Severity : Low

Publid Date: 2026-02-03T01:18:55Z

Links: CVE-2025-67476 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-04T12:14:34Z

Weaknesses