CVE-2026-88648

CVE-2026-88648

Low · published October 8, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
9.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00203 · 9.7th percentile
Published
2026-10-08T23:20Z
References (3)
https://gist.github.com/lkloliver/1f2a97cb8d0b31aa27b6bd0354358d7d · [email protected]https://www.rfc-editor.org/rfc/rfc5280#section-4.2.1.10 · [email protected]https://www.rfc-editor.org/rfc/rfc5280#section-6.1.4 · [email protected]
EPSS history
Timeline
  • 10 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 08 OCT 00:00Z
    Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and…
    cvelistv5
  • 08 OCT 00:00Z
    Incomplete X.509 implementation in GnuTLS v3.8.13 allows attackers controlling a subordinate Certificate Authority to bypass cross-domain PKI restrictions and…
    cvelistv5