CVE-2026-34091

EUVD-2026-29063
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.

This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 20%
Affected Products (NVD)
VendorProductVersion
mediawikimediawiki
𝑥
< 1.43.7
mediawikimediawiki
1.44.0 ≤
𝑥
< 1.44.4
mediawikimediawiki
1.45.0 ≤
𝑥
< 1.45.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mediawiki
bookworm
1:1.39.17-1+deb12u2
fixed
bookworm (security)
1:1.39.17-1+deb12u2
fixed
bullseye
1:1.35.13-1+deb11u2
fixed
bullseye (security)
1:1.35.13-1+deb11u7
fixed
forky
1:1.43.8+dfsg-2
fixed
sid
1:1.43.8+dfsg-2
fixed
trixie
1:1.43.8+dfsg-1~deb13u1
fixed
trixie (security)
1:1.43.8+dfsg-1~deb13u1
fixed
Common Weakness Enumeration
References
https://phabricator.wikimedia.org/T411305