CVE-2026-42011
CVE-2026-42011 · Gnutls: gnutls: security bypass due to incorrect name constraint handling
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
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 7.4 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
red hat enterprise linux 10
- Versions
- ≥ 0:3.8.10-4.el10_2: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
- Versions
- ≥ 0:3.8.9-9.el10_0.19: Not affected (rpm)
No fix published
red hat enterprise linux 7 extended lifecycle support
- Versions
- ≥ 0:3.3.29-9.el7_9.2: Not affected (rpm)
No fix published
red hat enterprise linux 8
- Versions
- ≥ 0:3.6.16-8.el8_10.6: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 0:3.6.14-10.el8_4.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 advanced mission critical update support
- Versions
- ≥ 0:4.13-3.el8_4.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 0:3.6.14-10.el8_4.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.4 extended update support long-life add-on
- Versions
- ≥ 0:4.13-3.el8_4.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:3.6.16-5.el8_6.5: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 advanced mission critical update support
- Versions
- ≥ 0:4.13-3.el8_6.2: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 0:3.6.16-5.el8_6.5: Not affected (rpm)
No fix published
red hat enterprise linux 8.6 extended update support long-life add-on
- Versions
- ≥ 0:4.13-3.el8_6.2: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:3.6.16-7.el8_8.4: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 telecommunications update service
- Versions
- ≥ 0:4.13-4.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:3.6.16-7.el8_8.4: Not affected (rpm)
No fix published
red hat enterprise linux 8.8 update services for sap solutions
- Versions
- ≥ 0:4.13-4.el8_8.1: Not affected (rpm)
No fix published
red hat enterprise linux 9
- Versions
- ≥ 0:3.8.10-4.el9_8: Not affected (rpm)
No fix published
red hat enterprise linux 9.2 update services for sap solutions
- Versions
- ≥ 0:3.7.6-21.el9_2.7: Not affected (rpm)
No fix published
red hat enterprise linux 9.4 update services for sap solutions
- Versions
- ≥ 0:3.8.3-4.el9_4.6: Not affected (rpm)
No fix published
red hat enterprise linux 9.6 extended update support
- Versions
- ≥ 0:3.8.3-6.el9_6.4: Not affected (rpm)
No fix published
red hat openshift container platform 4.12
- Versions
- ≥ 412.86.202608241157-0: Not affected (rpm)
No fix published
red hat openshift container platform 4.16
- Versions
- ≥ 416.94.202608150307-0: Not affected (rpm)
No fix published
red hat openshift container platform 4.17
- Versions
- ≥ 417.94.202608250221-0: Not affected (rpm)
No fix published
red hat openshift container platform 4.18
- Versions
- ≥ 418.94.202608142238-0: Not affected (rpm)
No fix published
Original sources
- https://access.redhat.com/errata/RHSA-2026:13274
- https://access.redhat.com/errata/RHSA-2026:20611
- https://access.redhat.com/errata/RHSA-2026:20612
- https://access.redhat.com/errata/RHSA-2026:20613
- https://access.redhat.com/errata/RHSA-2026:26319
- https://access.redhat.com/errata/RHSA-2026:26409
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:30004
- https://access.redhat.com/errata/RHSA-2026:30849
- https://access.redhat.com/errata/RHSA-2026:30850
- https://access.redhat.com/errata/RHSA-2026:32962
- https://access.redhat.com/errata/RHSA-2026:33125
- https://access.redhat.com/errata/RHSA-2026:40762
- https://access.redhat.com/errata/RHSA-2026:41921
- https://access.redhat.com/errata/RHSA-2026:43575
- https://access.redhat.com/errata/RHSA-2026:56853
- https://access.redhat.com/errata/RHSA-2026:57483
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:59831
- https://access.redhat.com/errata/RHSA-2026:60019
- https://access.redhat.com/errata/RHSA-2026:72502
- https://access.redhat.com/errata/RHSA-2026:74674
- https://access.redhat.com/errata/RHSA-2026:82304
- https://nvd.nist.gov/vuln/detail/CVE-2026-42011