CVE-2025-62671: Cargo Mediawiki Extension vulnerable to Cross-site Scripting

CVE-2025-62671 · Severity: medium · CVSS 4 · Published 2025-10-18

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: master.

Technologies: mediawiki/cargo (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2025-62671 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-62671 being exploited in the wild.
How severe is CVE-2025-62671?
Medium severity, with a CVSS score of 4, published 18 October 2025.
Which products and versions are affected?
mediawiki/cargo (Packagist) ECOSYSTEM:introduced=0,fixed=3.8.3.
Is there a fix for CVE-2025-62671?
Yes. mediawiki/cargo (Packagist): upgrade to 3.8.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-62671?
Check whether you run mediawiki/cargo (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • mediawiki/cargo (Packagist): upgrade to 3.8.3 or later
    composer require mediawiki/cargo:^3.8.3

Affected products

  • mediawiki/cargo (Packagist) ECOSYSTEM:introduced=0,fixed=3.8.3

Identifiers

  • CVE-2025-62671
  • GHSA-gr6v-3pmp-996p

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