CVE-2026-126561

Description

Semantic MediaWiki 2.5.0 before 7.4.1 contains a missing authorization vulnerability that allows editors without the edit-protection right to lock pages by adding an Is edit protected annotation. Attackers can add [[Is edit protected::true]] to pages or #set it in widely transcluded templates, so the TitleQuickPermissions hook blocks other editors and administrators from editing, moving or deleting them indefinitely.

References

• https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/Protection/ProtectionValidator.php#L293-L311
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/ca81329c74aa64077f367e02ad00c079458ef10a
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1
• https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9w3p-9m8x-j2mw
• https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.4.1-missing-authorization-via-is-edit-protected-annotation