CVE-2026-14570 Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery

Crypt::DSA versions before 1.22 for Perl draw the DSA signing nonce and private key from a biased random generator, leading to private-key recovery. "Crypt::DSA::Util::makerandom forces the high bit of every value it returns to obtain an exactly N-bit integer for prime search. The signing nonce a...

CVE-2026-14570

CVE-2026-14570 affects Crypt::DSA for Perl prior to 1.22. The root cause is a biased random generator in Crypt::DSA::Util::makerandom that fixes the top bit of the produced N-bit values, making signing nonces non-uniform and enabling private-key recovery. An attacker collecting a modest number of...