Quick answers
- Is CVE-2026-58032 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-58032 being exploited in the wild.
- How severe is CVE-2026-58032?
- Informational severity, with a CVSS score of 5.3, published 1 July 2026.
- Which products and versions are affected?
- Wikimedia Foundation MediaWiki Versions before 1.46.0, 1.45.4, 1.44.6, 1.43.9.
- Is there a fix for CVE-2026-58032?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-58032 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-58032?
- Check whether you run Wikimedia Foundation MediaWiki 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.
Technical details
A Cross-Site Scripting (XSS) vulnerability exists in MediaWiki due to improper neutralization of input during web page generation. The flaw is specifically located within the 'resources/src/mediawiki.Api/index.js' component. An unauthenticated remote attacker can exploit this by tricking a user into interacting with a specially crafted link or page, leading to the execution of arbitrary JavaScript in the context of the victim's browser session. This issue is tracked as CWE-79 and has been addressed in versions 1.46.0, 1.45.4, 1.44.6, and 1.43.9.
Affected products
- Wikimedia Foundation MediaWiki Versions before 1.46.0, 1.45.4, 1.44.6, 1.43.9
Timeline
- 2026-07-01: disclosed
- 2026-07-01: advisory