CVE-2026-12205
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/06/2026
Last modified:
16/06/2026
Description
Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery.<br />
<br />
Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it.<br />
<br />
The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r".<br />
<br />
Keys used to sign more than once with an affected version should be considered compromised.
Impact
Base Score 3.x
9.10
Severity 3.x
CRITICAL