CVE-2026-58033

NameCVE-2026-58033
DescriptionExposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/InfoAction.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6380-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mediawiki (PTS)bookworm, bookworm (security)1:1.39.17-1+deb12u2vulnerable
trixie (security), trixie1:1.43.9+dfsg-1~deb13u1fixed
forky, sid1:1.43.9+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mediawikisourcetrixie1:1.43.9+dfsg-1~deb13u1DSA-6380-1
mediawikisource(unstable)1:1.43.9+dfsg-1

Notes

https://phabricator.wikimedia.org/T427235
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1306212 (master)
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1306309 (REL1_43)
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