[ CVE-2026-100378 · Published 25 Sep 2026 ]

Vulnerability in Wikimedia Foundation Mediawiki - Translate Extension

CVSS 5.3 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]Official description

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

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

BSI CERT-Bund27 Sep 2026WID-SEC-2026-3597

MediaWiki Extensions: Multiple vulnerabilities Translated from German
CVE-2026-57440CVE-2026-96875CVE-2026-100237+11 more CVEs

[ References ]References

[ Facts ]Key facts

CVE: CVE-2026-100378
EUVD: EUVD-2026-87361
Published: 25 Sep 2026, 21:17 UTC
Updated: 28 Sep 2026, 16:38 UTC
NVD status: Awaiting Analysis
CVSS 4.0: 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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
Scored by c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
EPSS: 0.27% chance of exploitation in 30 days · higher than 17% of CVEs
CISA SSVC: Exploitation: none · Automatable: no · Impact: partial
Weakness: CWE-862

[ Affected ]Affected products

Wikimedia Foundation Mediawiki - Translate Extension< 1.46.1, 1.45.5, 1.43.10

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

MediaWiki Extensions: Multiple vulnerabilities Translated from German

[ References ]References