VULNERABILITY INTELLIGENCE
CVE-2026-12205
CVSS score9.1 CRITICAL
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-06-15
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r". Keys used to sign more than once with an affected version should be considered compromised.
Weakness classification
- 9b29abf9-4ab0-4765-b253-1875cd9b441e: CWE-323