CVE-2026-103046 PUBLISHED

WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML

Assigner: wikimedia-foundation
Reserved: 29.09.2026 Published: 29.09.2026 Updated: 29.09.2026

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS.

This issue affects MediaWiki - WikiLambda extension: before 1.46.1.

Product Status

Vendor The Wikimedia Foundation
Product Mediawiki - WikiLambda Extension
Versions Default: unaffected
  • affected from 0 to 1.46.1 (excl.)

Credits

  • SomeRandomDeveloper reporter
  • James Forrester remediation developer

References

Problem Types

  • CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE

Impacts

  • CAPEC-592 Stored XSS