CVE-2026-88648

State: Published
Severity: 3.7 Low
Published: Oct 8, 2026
Updated: Oct 29, 2026
Reserved: Sep 10, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	3.7 Low	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-295 Improper Certificate Validation

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://www.rfc-editor.org/rfc/rfc5280#section-4.2.1.10
https://www.rfc-editor.org/rfc/rfc5280#section-6.1.4
https://gist.github.com/lkloliver/1f2a97cb8d0b31aa27b6bd0354358d7d

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