{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12205", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-06-14T12:07:30.610Z", "datePublished": "2026-06-15T21:57:18.317Z", "dateUpdated": "2026-06-16T16:13:32.533Z"}, "containers": {"cna": {"affected": [{"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"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Richard Kettlewell"}], "descriptions": [{"lang": "en", "value": "Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery.\n\nCrypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it.\n\nThe first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical \"r\".\n\nKeys used to sign more than once with an affected version should be considered compromised."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-323", "description": "CWE-323 Reusing a Nonce, Key Pair in Encryption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-06-15T21:57:18.317Z"}, "references": [{"url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.20/source/lib/Crypt/DSA.pm#L47"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/changes"}], "solutions": [{"lang": "en", "value": "Upgrade to version 1.21\n\nRevoke any keys that may have been compromised.\n\nCrypt::DSA was deprecated in version 1.20. You should migrate to another solution."}], "source": {"discovery": "UNKNOWN"}, "timeline": [{"lang": "en", "time": "2026-05-16T00:00:00.000Z", "value": "Maintainer contacted"}, {"lang": "en", "time": "2026-06-13T00:00:00.000Z", "value": "Maintainer and CPANSec contacted"}, {"lang": "en", "time": "2026-06-14T00:00:00.000Z", "value": "Fixed version released"}], "title": "Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/06/15/4"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-15T22:44:28.639Z"}}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-06-16T16:13:28.769417Z", "id": "CVE-2026-12205", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-16T16:13:32.533Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery.\n\nCrypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it.\n\nThe first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical \"r\".\n\nKeys used to sign more than once with an affected version should be considered compromised."}], "id": "CVE-2026-12205", "lastModified": "2026-06-16T17:16:32.480", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-06-15T23:16:43.150", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.20/source/lib/Crypt/DSA.pm#L47"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/release/TIMLEGGE/Crypt-DSA-1.21/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/06/15/4"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-323"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}