CVE-2026-32883 — Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass
Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but cr…
Published: 2026-03-30 · CVSS: 5.9 · CVSS 3.1
Botan is a C++ cryptography library. From version 3.0.0 to before version 3.11.0, during X509 path validation, OCSP responses were checked for an appropriate status code, but critically omitted verifying the signature of the OCSP response itself. This issue has been patched in version 3.11.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7