CVE-2026-88648 Security feature bypass in n/a
Attackers controlling a subordinate CA can bypass PKI restrictions to issue unauthorized certificates due to incomplete X.509 implementation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88648?
CVE-2026-88648 is a low-severity vulnerability in n/a, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-295
Which versions are affected by CVE-2026-88648?
How do I fix CVE-2026-88648?
No fix has been published for CVE-2026-88648 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-88648 being exploited?
There is no known exploitation of CVE-2026-88648 in the wild and no public exploit code.
Sources
Also known as AZL-107436, DEBIAN-CVE-2026-88648, ECHO-7858-58b8-3dfa, GHSA-gxj4-87qm-hmc3, UBUNTU-CVE-2026-88648.