DEBIAN-CVE-2026-5194

Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication...

CVE-2025-52556

rfc3161-client is a Python library implementing the Time-Stamp Protocol TSP described in RFC 3161. Prior to version 1.0.3, there is a flaw in the timestamp response signature verification logic. In particular, chain verification is performed against the TSR's embedded certificates up to the trust...

CVE-2020-13895

Crypt::Perl::ECDSA in the Crypt::Perl aka p5-Crypt-Perl module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 prime256v1. This could conceivably have a security-relevant impact if an attacker wishes ...