PT-2026-54900 · Mediawiki · Mediawiki

Published 2026-07-01 · Updated 2026-07-01 · CVE-2026-58031

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki versions 1.46.0-rc.0 through 1.46.0-rc.x

Description An issue exists involving improper neutralization of input during web page generation, leading to Cross-site Scripting (XSS), which occurs when an application includes untrusted data in a web page without proper validation or encoding. This flaw is associated with the program file resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js.

Recommendations Update MediaWiki to version 1.46.0.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-58031

Affected Products

Mediawiki

References · 8

• https://osv.dev/vulnerability/CVE-2026-58031 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-58031 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-58031 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-58031 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-58031 · Security Note
• https://t.me/cveNotify/183680 · Telegram Post
• https://phabricator.wikimedia.org/T426889 · Note
• https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1299593 · Note