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CVE-2026-3833

MEDIUM · CVSS 6.5 EPSS 0.11% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-04-30 · Last synced: 2026-05-30

CyberRota Analysis

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

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CVE
CVE-2026-3833
Severity
MEDIUM
CVSS
6.5
EPSS
0.11%

Original NVD Description

A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.