WikiLambda exposes anonymous execution of unsaved Abstract Wikipedia fragments
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.4epss 0.3%
from disclosure to weapon0 days
Published on NVDSep 30
1st PoCSep 30
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass.
This issue affects MediaWiki WikiLambda extension: 1.46.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
Affected products
The Wikimedia Foundation · MediaWiki WikiLambda extensionpublic PoCs found — 1
githubgithub.com/BomboBombone/CVE-2026-103446★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.