CVE-2026-42011

{"id": "CVE-2026-42011", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.2}]}, "published": "2026-05-07T15:16:09.760", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:13274", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20611", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20612", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20613", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-42011", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467437", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-295"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-02T16:16:39.853", "sourceIdentifier": "secalert@redhat.com"}