Quick answers
- Is CVE-2026-96873 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96873 being exploited in the wild.
- How severe is CVE-2026-96873?
- Informational severity, published 24 September 2026.
- Which products and versions are affected?
- Wikimedia MediaWiki CirrusSearch extension through 1.46.0.
- Is there a fix for CVE-2026-96873?
- 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-2026-96873 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-96873?
- Check whether you run Wikimedia MediaWiki CirrusSearch extension 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 reflected XSS vulnerability exists in the CirrusSearch extension due to improper input neutralization during web page generation. The vulnerability is triggered via user-supplied input that is echoed back in the HTTP response without sanitization. An attacker can exploit this by crafting a malicious URL and tricking a user into clicking it, resulting in arbitrary JavaScript execution in the victim's browser context.
Affected products
- Wikimedia MediaWiki CirrusSearch extension through 1.46.0
Timeline
- 2026-09-24: disclosed