CVE-2026-12205

critical · 9.1

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.

9.1

CVSS

0.3%

EPSS (exploit prob.)

22nd

EPSS percentile

2026-06-15

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-323

References

https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.20/source/lib/Crypt/DSA.pm#L47
https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/changes
http://www.openwall.com/lists/oss-security/2026/06/15/4

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-12205