Improper Certificate Validation Affecting sequoia-sq package, versions *


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-RHEL10-SEQUOIASQ-15984139
  • published12 Apr 2026
  • disclosed7 Apr 2026

Introduced: 7 Apr 2026

CVE-2026-34580  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 sequoia-sq.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sequoia-sq package and not the sequoia-sq package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

Botan is a C++ cryptography library. In 3.11.0, the function Certificate_Store::certificate_known had a misleading name; it would return true if any certificate in the store had a DN (and subject key identifier, if set) matching that of the argument. It did not check that the cert it found and the cert it was passed were actually the same certificate. In 3.11.0 an extension of path validation logic was made which assumed that certificate_known only returned true if the certificates were in fact identical. The impact is that if an end entity certificate is presented, and its DN (and subject key identifier, if set) match that of any trusted root, the end entity certificate is accepted immediately as if it itself were a trusted root. , This vulnerability is fixed in 3.11.1.

CVSS Base Scores

version 3.1