CVE-2026-12205

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Source
https://cve.org/CVERecord?id=CVE-2026-12205
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12205.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-12205
Downstream
Published
2026-06-15T21:57:18.317Z
Modified
2026-07-08T07:48:28.682924946Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12205.json",
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-323"
    ]
}
References

Affected packages

Git / github.com/perl-crypt-openpgp/crypt-dsa

Affected ranges

Type
GIT
Repo
https://github.com/perl-crypt-openpgp/crypt-dsa
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ff96123c051e9582c8645cd79bdc061ee2f31c55
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.21"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*
1.17
1.18
1.19
1.20

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-12205.json"