CVE-2025-53502: HTML injection in FeaturedFeeds

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-03 · updated 2026-06-17
Weakness: CWE-20

Description

Improper Input Validation vulnerability in Wikimedia Foundation Mediawiki - FeaturedFeeds Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - FeaturedFeeds Extension: 1.39.X, 1.42.X, 1.43.X.

Affected products

Wikimedia Foundation Mediawiki - FeaturedFeeds Extension: 1.39.x, 1.42.x, 1.43.x

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/FeaturedFeeds/+/1149742
https://phabricator.wikimedia.org/T392279

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