CVE-2026-42011
HIGH EPSS 34.9%
Published May 7, 20261mo ago · Modified Jun 17, 20262w ago
7.4 CVSS 3.1
Published May 7, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
34.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-295
References 8
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:13274
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:20611
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:20612
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:20613
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:26319
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:26409
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-42011
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2467437
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.