CVE-2026-32883 — Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass

CVE-2026-32883

Botan: Missing OCSP Response Signature Verification Allows MitM Certificate Revocation Bypass PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
randombit / botan	affected >= 3.0.0, < 3.11.0

CWE

CWE-347

References

https://github.com/randombit/botan/security/advisories/GHSA-9j2j-hqmc-hf5x

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.