CVE-2026-126566
Semantic MediaWiki 7.3.1 before 7.4.1 Incorrect Authorization via Edit Protection Annotations
Semantic MediaWiki 7.3.1 before 7.4.1 contains an incorrect authorization vulnerability in EditProtectionUpdater::userMayChangeProtection() that checks protection changes against the page's latest revision author. Editors can add {{#set:Is edit protected=false}} to a transcluded template, removing administrator edit and move protection logged under the administrator's name.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| SemanticMediaWiki SemanticMediaWiki mediawiki/semantic-media-wiki
composer |
≥ 7.3.1; < 7.4.1 (affected, semver) 7.4.1 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 7.1 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 7.1 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L | CNA: VulnCheck |
| 4.0 / 7.1 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 7.1 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L | NVD: [email protected] |
Exploit evidence
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-gh59-2vh3-6cgmCNA: VulnCheck · vendor-advisory
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/32ca6d8fc75735aa7a2ecc573886391da126da9bCNA: VulnCheck · patch
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1CNA: VulnCheck · release-notes
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/Protection/EditProtectionUpdater.php#L147-L200CNA: VulnCheck · technical-description
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/DataUpdater.php#L360-L375CNA: VulnCheck · technical-description
- https://www.vulncheck.com/advisories/semantic-mediawiki-7.3.1-before-7.4.1-incorrect-authorization-via-edit-protection-annotationsCNA: VulnCheck · third-party-advisory
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-gh59-2vh3-6cgmADP: CISA-ADP · exploit
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/DataUpdater.php#L360-L375[email protected]
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/7.4.0/src/Protection/EditProtectionUpdater.php#L147-L200[email protected]
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/32ca6d8fc75735aa7a2ecc573886391da126da9b[email protected]
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.4.1[email protected]
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-gh59-2vh3-6cgm[email protected]
- https://www.vulncheck.com/advisories/semantic-mediawiki-7.3.1-before-7.4.1-incorrect-authorization-via-edit-protection-annotations[email protected]
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