CVE-2025-53502

HTML injection in FeaturedFeeds

6.5 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.24%Up 0.2 points since Jul 4, 2025

What each source reports

CVE List Score used 6.5

HTML injection in FeaturedFeeds

Record: CVE-2025-53502
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

EUVDEUVD-2025-19888 6.5

Record: EUVD-2025-19888
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-h639-qx2x-fm8f 6.5

Improper Input Validation vulnerability in Wikimedia Foundation Mediawiki - FeaturedFeeds...

Record: GHSA-h639-qx2x-fm8f
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

NVD 6.5

Record: CVE-2025-53502
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness: CWE-20
Updated: 2026-11-02

Affected products

wikimedia foundation mediawiki - featuredfeeds extension

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-53502 is a medium vulnerability (CVSS 6.5) in Wikimedia Foundation Mediawiki - Featuredfeeds Extension, published July 3, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 14th percentile. No source names a fixed version.