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

Source: https://junglewise.ai/threats/cve-2025-62671-cargo-mediawiki-extension-vulnerable-to-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-18  
License: CC BY 4.0 with a link back

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)](https://junglewise.ai/threats/technologies/mediawiki-cargo). Vendors: [Packagist](https://junglewise.ai/threats/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

  ```sh
  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

## Related threats

- [Mediawiki Cargo extension vulnerable to Cross-site Scripting](https://junglewise.ai/threats/cve-2024-47847-mediawiki-cargo-extension-vulnerable-to-cross-site-scripting)
- [MediaWiki Cargo Extension Cross-site Scripting vulnerability](https://junglewise.ai/threats/cve-2024-23173-mediawiki-cargo-extension-cross-site-scripting-vulnerability)