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
- CVSS 3.1 Base Score: 7.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gnutlsUpgrade gnutls-develUpgrade gnutls-c++Upgrade gnutls-daneUpgrade gnutls-utils | May 27, 2026 | May 26, 2026 |
| Alpine Linux | — | Upgrade gnutls | May 8, 2026 | May 7, 2026 |
| Amazon_linux_2023 | — | Upgrade gnutls-develUpgrade gnutls-daneUpgrade gnutls-debuginfoUpgrade gnutls-c++Upgrade gnutls-utilsUpgrade gnutls-c++-debuginfoUpgrade gnutlsUpgrade gnutls-utils-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-debugsource | Jun 9, 2026 | May 7, 2026 |
| Debian | — | Upgrade gnutls28 | May 20, 2026 | May 20, 2026 |
| Oracle_linux | — | Upgrade gnutlsUpgrade gnutls-develUpgrade gnutls-daneUpgrade gnutls-utilsUpgrade gnutls-c++ | Jun 4, 2026 | May 7, 2026 |
| Redhat Openshift | — | Upgrade rhcos | Aug 10, 2026 | Apr 29, 2026 |
| Redhat_linux | — | Upgrade gnutls-fipsNo solution existsUpgrade gnutls-dane-debuginfoUpgrade gnutls-c++Upgrade gnutls-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutlsUpgrade gnutls-develUpgrade gnutls-utilsUpgrade gnutls-daneUpgrade gnutls-utils-debuginfoUpgrade gnutls-debugsource | May 28, 2026 | Apr 29, 2026 |
| Rocky_linux | — | Upgrade gnutls-daneUpgrade gnutlsUpgrade gnutls-fipsUpgrade gnutls-utils-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-utilsUpgrade gnutls-c++-debuginfoUpgrade gnutls-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-develUpgrade gnutls-c++ | Jun 1, 2026 | May 29, 2026 |
| Ubuntu | — | Upgrade libgnutls30t64Upgrade libgnutls30Upgrade libgnutls30 (Ubuntu Pro) | May 25, 2026 | May 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 7, 2026 |
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