Improper Handling of Case Sensitivity Affecting gnutls package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-GNUTLS-16345360
- published3 May 2026
- disclosed30 Apr 2026
- creditUnknown
Introduced: 30 Apr 2026
NewCVE-2026-3833 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Improper Handling of Case Sensitivity in the enforcement of X.509 nameConstraints due to case-sensitive comparisons for dNSName and the domain portion of rfc822Name. An attacker can gain unauthorized certificate validation and potentially impersonate restricted services by crafting certificates with letter casing variations in the Subject Alternative Name (SAN) to bypass domain restrictions.