CVE Explorer
CVE-2026-12205
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Crypt-DSA","product":"Crypt::DSA","programFiles":["lib/Crypt/DSA.pm"],"programRoutines":[{"name":"Crypt::DSA::sign"}],"repo":"https://github.com/perl-Crypt-OpenPGP/Crypt-DSA","vendor":"TIMLEGGE","versions":[{"lessThan":"1.21","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/adp/1/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-323","description":"CWE-323 Reusing a Nonce, Key Pair in Encryption","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"url":"http://www.openwall.com/lists/oss-security/2026/06/15/4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/adp/0/references/0
{"url":"https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.20/source/lib/Crypt/DSA.pm#L47"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/changes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ff49d12b1b6581452c94f00f782dc4ec638d65711f32e3fdb2efdf8046cc07b · sha256:8176c6b7e97db67c… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.