PT-2026-2258 · Wikimedia Foundation · Growthexperiments Extension For Mediawiki

Somerandomdeveloper · Published 2026-01-09 · Updated 2026-01-09 · CVE-2026-22713

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 - GrowthExperiments Extension versions 1.39 through 1.45

Description The Wikimedia Foundation Mediawiki - GrowthExperiments Extension is susceptible to a Cross-Site Scripting (XSS) issue due to improper neutralization of input during web page generation. This allows for the execution of malicious scripts within the context of a user's browser. The issue occurs through edit summaries within the GrowthExperiments extension.

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

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-22713

Affected Products

Growthexperiments Extension For Mediawiki

References · 6

• 🔥 https://phabricator.wikimedia.org/T411144 · Exploit
• https://osv.dev/vulnerability/CVE-2026-22713 · Vendor Advisory
• https://gerrit.wikimedia.org/r/q/Iff01940a163ed87ec52f3a64ba6b2dbfa2759df3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-22713 · Security Note
• https://twitter.com/CVEnew/status/2009462323141070999 · Twitter Post
• https://t.me/CVEtracker/41783 · Telegram Post