Vulnerability · Published Sep 24, 2026 · Assigned by wikimedia-foundation
CVE-2026-96873Reflected XSS in CirrusSearch debug explain output
Medium 5.5
In plain English
A medium-severity cross-site scripting in Mediawiki - CirrusSearch Extension from The Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Mediawiki - CirrusSearch extension allows Reflected XSS. This issue affects Mediawiki - CirrusSearch extension through 1.46.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wikimedia Foundation | Mediawiki - CirrusSearch Extension | 0 – through 1.46.0 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P