PT-2026-29125

CVE-2026-32883

Published

2026-03-30

Updated

2026-03-31

Description by

CVSS 3.1

5.9

Medium

MetricsAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Botan versions 3.0.0 through 3.10.9

Description Botan is a C++ cryptography library. During X509 path validation, versions prior to 3.11.0 did not verify the signature of Online Certificate Status Protocol (OCSP) responses, only checking for an appropriate status code. This could allow a man-in-the-middle (MitM) attack to bypass certificate revocation checks.

Recommendations Update to Botan version 3.11.0 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Harutokimura

Vendors

Affected products

Weakness enumeration

CWE-299: Improper Check for Certificate Revocation

CWE-347: Improper Verification of Cryptographic Signature