CVE-2026-94284: X.org LIBX11

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

Affected products

• X.org LIBX11: before 1.8.14 (fixed in 1.8.14)

Published 2026-09-28. Last modified 2026-09-30.