{
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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-06-15T22:44:28.639Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/06/15/4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "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": {
        "dateUpdated": "2026-06-15T21:57:18.317Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-12205",
    "datePublished": "2026-06-15T21:57:18.317Z",
    "dateReserved": "2026-06-14T12:07:30.610Z",
    "dateUpdated": "2026-06-15T22:44:28.639Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-12205\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2026-06-15T23:16:43.150\",\"lastModified\":\"2026-06-15T23:16:43.150\",\"vulnStatus\":\"Received\",\"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.\"}],\"metrics\":{},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-323\"}]}],\"references\":[{\"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\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2026/06/15/4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}