Detections
Analytics

CVE-2026-88648

high

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.

References

https://www.rfc-editor.org/rfc/rfc5280#section-6.1.4

https://www.rfc-editor.org/rfc/rfc5280#section-4.2.1.10

https://gist.github.com/lkloliver/1f2a97cb8d0b31aa27b6bd0354358d7d

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95205

Details

Source: Mitre, NVD

Published: 2026-10-08

Updated: 2026-10-08

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: High

EPSS

EPSS: 0.00117