CVE-2026-96872lowCWE-280

CVE-2026-96872: low-severity vulnerability in The Wikimedia Foundation Mediawiki…

WikiLambda public function execution bypasses the unsaved-code permission through nested Z825 compositions

Published

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28Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 2.9epss 0.3%
from disclosure to weapon6 days
Published on NVDSep 23
1st PoC+6d
Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - WikiLambda Extension: before 1.47.0.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/AU:Y
Affected products
The Wikimedia Foundation · Mediawiki - WikiLambda Extension
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Related CVEs — The Wikimedia Foundation Mediawiki…

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CVE-2025-62695MEDIUMStored XSS through system messagesEPSS 0.4%CVE-2026-58517MEDIUMBlocked users can create and edit WikiLambda objectsEPSS 0.3%CVE-2026-103046MEDIUMWikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTMLEPSS 0.2%