PT-2026-54895 · Mediawiki · Mediawiki

Published 2026-07-01 · Updated 2026-07-01 · CVE-2026-58026

Positive Technologies (AI Summary)

CVSS v3.1

5.7

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions MediaWiki versions prior to 1.46.0 MediaWiki versions prior to 1.45.4 MediaWiki versions prior to 1.44.6 MediaWiki versions prior to 1.43.9

Description An issue exists in the includes/Parser/Parser.Php file that allows the exposure of sensitive information to unauthorized actors. This occurs because the $wgNonincludableNamespaces variable can be bypassed by embedding a redirect in other namespaces.

Recommendations Update to version 1.46.0 or later. Update to version 1.45.4 or later. Update to version 1.44.6 or later. Update to version 1.43.9 or later.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-58026

Affected Products

Mediawiki

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2026-58026 · Security Note
• https://osv.dev/vulnerability/CVE-2026-58026 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-58026 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-58026 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-58026 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-58026 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-58026 · Vendor Advisory
• https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1306214 · Note
• http://phabricator.wikimedia.org/T299359 · Note
• https://t.me/CVEtracker/58586 · Telegram Post
• https://phabricator.wikimedia.org/T299359 · Note
• https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1306311 · Note