CVE-2026-88648: Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and issue unauthorized certificates.
Overview
- Severity
- Medium (CVSS 5.4)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Oct
- Released
- 2026-10-11
- Last Updated
- 2026-10-13
- EPSS Score
- 0.12% (percentile: 1.6%)
Affected Products (1)
Other
Revision History
- 2026-10-11: Information published.
- 2026-10-13: Information published.