Vulnerability · Published Sep 25, 2026 · Assigned by wikimedia-foundation
CVE-2026-96877Reflected XSS through Cargo Drilldown full-text search
Medium 6.9
In plain English
A medium-severity cross-site scripting in Mediawiki - Cargo 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.
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.3%top 72.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Mediawiki - Cargo extension allows Reflected XSS. This issue affects Mediawiki - Cargo extension: through 3.9.4.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Wikimedia Foundation | Mediawiki - Cargo extension | 0 – through 3.9.4 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N