PT-2026-1966 · Mediawiki · Mediawiki Proofreadpage Extension

Somerandomdeveloper · Published 2026-01-07 · Updated 2026-02-23 · CVE-2026-0670

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki - ProofreadPage Extension versions 1.39 through 1.45

Description The MediaWiki - ProofreadPage Extension contains a flaw related to improper input neutralization during web page generation, leading to a Cross-Site Scripting (XSS) issue. This allows for the injection of malicious scripts into web pages. The issue involves a system message and a user-provided parameter.

Recommendations Update MediaWiki - ProofreadPage Extension to a version later than 1.45. Update MediaWiki - ProofreadPage Extension to a version later than 1.44. Update MediaWiki - ProofreadPage Extension to a version later than 1.43. Update MediaWiki - ProofreadPage Extension to a version later than 1.39.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-0670

Affected Products

Mediawiki Proofreadpage Extension

References · 7

• 🔥 https://phabricator.wikimedia.org/T409423 · Exploit
• https://osv.dev/vulnerability/CVE-2026-0670 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0670 · Security Note
• https://gerrit.wikimedia.org/r/q/I7c028db5ed81843aacd596b0ee4dc2980f5b6e3c · Patch
• https://t.me/cveNotify/152911 · Telegram Post
• https://t.me/CVEtracker/41633 · Telegram Post
• https://twitter.com/CVEnew/status/2009020532856115353 · Twitter Post