CVE-2026-42011
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.4
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-05-07 15:16:09.760000
Last modified
2026-10-30 08:16:56.697000
View original CVE JSON
{
"id": "CVE-2026-42011",
"sourceIdentifier": "[email protected]",
"published": "2026-05-07T15:16:09.760",
"lastModified": "2026-10-30T08:16:56.697",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"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."
},
{
"lang": "es",
"value": "Se encontró una falla en gnutls. Esta vulnerabilidad ocurre porque las restricciones de nombre permitidas fueron ignoradas incorrectamente cuando las Autoridades de Certificación (CA) anteriores solo tenían restricciones de nombre excluidas. Un atacante remoto podría explotar esto para eludir las comprobaciones críticas de restricciones de nombre durante la validación de certificados. Esta elusión podría llevar a la aceptación de certificados no válidos, lo que podría permitir ataques de suplantación de identidad o man-in-the-middle contra sistemas afectados."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"packageName": "gnutls",
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}
]
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