CVE-2026-100240

CVSS 9.1 (critical) · published 2026-09-29

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.

Weakness: CWE-862

Source: NVD CVE-2026-100240

References

• https://gerrit.wikimedia.org/r/q/Iaf9f6e2280798af5516197257ddc0264b9ad9fb7
• https://phabricator.wikimedia.org/T407974

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