PT-2026-2256 · Unknown · Wikibase Extension For Mediawiki

Somerandomdeveloper · Published 2026-01-08 · Updated 2026-01-09 · CVE-2026-22710

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 - Wikibase Extension versions 1.39 through 1.45

Description The Mediawiki - Wikibase Extension is susceptible to a Cross-Site Scripting (XSS) issue due to improper neutralization of input during web page generation. This allows for the injection of malicious scripts. The issue occurs through the autocomment system messages within Wikibase.

Recommendations Update Mediawiki - Wikibase Extension to a version later than 1.45. Update Mediawiki - Wikibase Extension to a version later than 1.44. Update Mediawiki - Wikibase Extension to a version later than 1.43. Update Mediawiki - Wikibase Extension to a version later than 1.39.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-22710

Affected Products

Wikibase Extension For Mediawiki

References · 6

• 🔥 https://phabricator.wikimedia.org/T409737 · Exploit
• https://gerrit.wikimedia.org/r/q/I39d0074b2ad022b6efe6ab3dd8c8ec0f86c6c466 · Patch
• https://osv.dev/vulnerability/CVE-2026-22710 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-22710 · Security Note
• https://twitter.com/CVEnew/status/2009462325351530874 · Twitter Post
• https://t.me/CVEtracker/41781 · Telegram Post