CVE-2025-61638 PUBLISHED

Sanitizer::validateAttributes data-XSS

Assigner: wikimedia-foundation
Reserved: 29.09.2025 Published: 02.02.2026 Updated: 02.02.2026

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid. This vulnerability is associated with program files includes/parser/Sanitizer.Php, src/Core/Sanitizer.Php.

This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1; Parsoid: from * before 0.16.6, 0.20.4, 0.21.1.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
CVSS Score: 0

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Wikimedia Foundation
Product	MediaWiki
Versions	Default: unaffected affected from * to 1.39.14, 1.43.4, 1.44.1 (excl.)

Vendor	Wikimedia Foundation
Product	Parsoid
Versions	Default: unaffected affected from * to 0.16.6, 0.20.4, 0.21.1 (excl.)

References

https://phabricator.wikimedia.org/T401099

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE