Is CVE-2026-95209 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-95209 being exploited in the wild.

How severe is CVE-2026-95209?

High severity, with a CVSS score of 7.5, published 8 October 2026.

Is there a fix for CVE-2026-95209?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-95209 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-95209?

Check whether you run GnuTLS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-95209: GnuTLS certificate validation denial of service

CVE-2026-95209 · Severity: high · CVSS 7.5 · Published 2026-10-08

GnuTLS is a cryptographic library used to secure network communications in many applications and services. A flaw in version 3.8.13 causes the library to incorrectly reject legitimate certificates from trusted certificate authorities, which can prevent secure connections from being established. This results in service unavailability for applications that depend on GnuTLS for encryption.

Technologies: GnuTLS. Vendors: GnuTLS.

Quick answers

Is CVE-2026-95209 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-95209 being exploited in the wild.
How severe is CVE-2026-95209?: High severity, with a CVSS score of 7.5, published 8 October 2026.
Which products and versions are affected?: GnuTLS 3.8.13.
Is there a fix for CVE-2026-95209?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-95209 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-95209?: Check whether you run GnuTLS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

GnuTLS 3.8.13 contains a certificate validation defect that causes legitimate CA certificates to be rejected during the certificate chain verification process. The vulnerability is remotely exploitable over the network when an affected application attempts to validate TLS connections. The flaw denies service by breaking encrypted communications without requiring authentication or user interaction.

Affected products

GnuTLS GnuTLS 3.8.13

Timeline

2026-10-08: disclosed

References

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