CVE-2026-3833EPSS p39.1%
CVE-2026-3833CVE-2026-3833
gnu / gnutls
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.
Scoring
| CVSS | 6.5 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| EPSS | 0.51% probability of exploitation · percentile 39.1% · 2026-06-19T12:03:05Z |
| Last modified | 2026-06-02 |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.