Quick answers
- Is CVE-2026-34092 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34092 being exploited in the wild.
- How severe is CVE-2026-34092?
- High severity, with a CVSS score of 7.5, published 11 May 2026.
- Which products and versions are affected?
- Wikimedia Foundation MediaWiki Before 1.43.7, 1.44.4, 1.45.2.
- Is there a fix for CVE-2026-34092?
- 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-2026-34092 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-34092?
- 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
An information disclosure vulnerability (CWE-200) exists in MediaWiki's skinning system, specifically within the 'includes/Skin/Skin.php' file. The flaw allows an authenticated attacker with low privileges to potentially access sensitive data that should be restricted. Exploitation requires some level of user interaction and occurs over the network. The vulnerability affects multiple branches of MediaWiki and has been addressed in versions 1.43.7, 1.44.4, and 1.45.2.
Affected products
- Wikimedia Foundation MediaWiki Before 1.43.7, 1.44.4, 1.45.2
Timeline
- 2026-05-11: disclosed: CVE published to the NVD dataset