Wikimedia MediaWiki WatchlistTopSectionWidget.Js cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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2.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Wikimedia MediaWiki. Affected by this issue is some unknown functionality of the file resources/src/mediawiki.Rcfilters/ui/WatchlistTopSectionWidget.Js. The manipulation leads to cross site scripting. This vulnerability is listed as CVE-2025-61644. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Wikimedia MediaWiki (affected version unknown). This issue affects an unknown functionality of the file resources/src/mediawiki.Rcfilters/ui/WatchlistTopSectionWidget.Js. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Rcfilters/ui/WatchlistTopSectionWidget.Js. This issue affects MediaWiki: from * before > fb856ce9cf121e046305116852cca4899ecb48ca.

It is possible to read the advisory at phabricator.wikimedia.org. The identification of this vulnerability is CVE-2025-61644 since 09/29/2025. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Applying the patch fb856ce9cf121e046305116852cca4899ecb48ca is able to eliminate this problem.

The vulnerability is also documented in the databases at EUVD (EUVD-2025-206646) and CERT Bund (WID-SEC-2026-0293). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Open Source MediaWiki

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 2.4
VulDB Meta Temp Score: 2.3

VulDB Base Score: 2.4
VulDB Temp Score: 2.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: fb856ce9cf121e046305116852cca4899ecb48ca

Timelineinfo

09/29/2025 CVE reserved
02/03/2026 +127 days Advisory disclosed
02/03/2026 +0 days VulDB entry created
02/05/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: phabricator.wikimedia.org
Status: Confirmed

CVE: CVE-2025-61644 (🔒)
GCVE (CVE): GCVE-0-2025-61644
GCVE (VulDB): GCVE-100-343883
EUVD: 🔒
CERT Bund: WID-SEC-2026-0293 - MediaWiki: Schwachstelle ermöglicht Cross-Site Scripting

Entryinfo

Created: 02/03/2026 08:05
Updated: 02/05/2026 09:46
Changes: 02/03/2026 08:05 (67), 02/04/2026 05:03 (1), 02/04/2026 11:30 (1), 02/05/2026 09:46 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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