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TLS CVE-2026-14570

| EUVDEUVD-2026-41713
Use of Insufficiently Random Values (CWE-330)
2026-07-05 CPANSec GHSA-v6rc-95xw-8xp5

Lifecycle Timeline

2
Patch available
Jul 05, 2026 - 03:01 EUVD
CVE Published
Jul 05, 2026 - 01:30 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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 and the private key are drawn from makerandom. Because the high bit is always set, the result is not uniform: its top bit is fixed, producing insecure values."

An attacker who collects a modest number of signatures under an affected key, together with the public key, can recover the private key with a lattice attack.

Keys used to sign with an affected version should be considered compromised and new keys should be generated.

Analysis

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. …

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CVE-2026-14570 vulnerability details – vuln.today

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