CVE-2026-88807

A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

  • Published Sep 21, 2026
  • CVSS 8.9 high
  • 0.3% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

CVE-2026-88807 at the National Vulnerability Database