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Description

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.

PUBLISHED Reserved 2025-09-29 | Published 2026-02-02 | Updated 2026-02-03 | Assigner wikimedia-foundation

Problem types

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

Product status

Default status
unaffected

* (semver) before 1.39.14, 1.43.4, 1.44.1
affected

Default status
unaffected

* (semver) before 0.16.6, 0.20.4, 0.21.1
affected

References

phabricator.wikimedia.org/T401099

cve.org (CVE-2025-61638)

nvd.nist.gov (CVE-2025-61638)

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