Vulnerability record/PUBLISHED/Published Oct 8, 2026 00:00:00 UTC

CVE-2026-95209

An issue in gnutls v3.8.13 causes legitimate CA certificates to be rejected, leading to a Denial of Service (DoS). NOTE: this is disputed by multiple parties because the behavior does not offer a new ability for an adversary to conduct a denial of service, and because the product can reasonably choose to enforce a dNSName constraint against Common Name when Subject Alternative Name is absent.

Base score5.9/ 10

SeverityMediumCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityMedium

Attack vectorNetworkAV

Attack complexityHighAC

Privileges requiredNonePR

User interactionNoneUI

ScopeUnchangedS

Confidentiality impactNoneC

Integrity impactNoneI

Availability impactHighA

CVSS vector stringCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering Authoritymitre

Last updatedNov 4, 2026 03:10:49 UTC

PublishedOct 8, 2026 00:00:00 UTC

ReservedSep 22, 2026 00:00:00 UTC