Vulnerability-Lookup

GHSA-J539-XXC6-73WF

Vulnerability from github – Published: 2026-05-08 18:31 – Updated: 2026-05-27 00:31

Details

Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts.

The built-in rand function is predictable, and unsuitable for cryptography.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-6659"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T18:16:34Z",
    "severity": "HIGH"
  },
  "details": "Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts.\n\nThe built-in rand function is predictable, and unsuitable for cryptography.",
  "id": "GHSA-j539-xxc6-73wf",
  "modified": "2026-05-27T00:31:26Z",
  "published": "2026-05-08T18:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6659"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ronsavage/Crypt-PasswdMD5/pull/3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ronsavage/Crypt-PasswdMD5/commit/a2f821637db0296082297aa4b02254ab08f0dc5e.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.42/source/lib/Crypt/PasswdMD5.pm#L35-47"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.43/changes"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/08/17"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-6659 (GCVE-0-2026-6659)

Vulnerability from cvelistv5 – Published: 2026-05-08 17:17 – Updated: 2026-05-26 22:52

Title

Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts

Summary

Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts. The built-in rand function is predictable, and unsuitable for cryptography.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-08 18:01 UTC

CWE

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Assigner

CPANSec redhat root

References

5 references

URL	Tags
https://metacpan.org/release/RSAVAGE/Crypt-Passwd…	release-notes
https://github.com/ronsavage/Crypt-PasswdMD5/pull/3	issue-tracking
https://github.com/ronsavage/Crypt-PasswdMD5/comm…	patch
https://metacpan.org/release/RSAVAGE/Crypt-Passwd…
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version
RSAVAGE	Crypt::PasswdMD5	Affected: 0 , ≤ 1.42 (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-6659",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-08T18:01:59.977528Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-08T18:04:17.941Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-08T19:30:59.696Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/05/08/17"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Crypt-PasswdMD5",
          "product": "Crypt::PasswdMD5",
          "programFiles": [
            "lib/Crypt/PasswdMD5.pm"
          ],
          "programRoutines": [
            {
              "name": "Crypt::PasswdMD5::random_md5_salt"
            }
          ],
          "repo": "https://github.com/ronsavage/Crypt-PasswdMD5",
          "vendor": "RSAVAGE",
          "versions": [
            {
              "lessThanOrEqual": "1.42",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts.\n\nThe built-in rand function is predictable, and unsuitable for cryptography."
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-338",
              "description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-26T22:52:31.427Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.43/changes"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/ronsavage/Crypt-PasswdMD5/pull/3"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/ronsavage/Crypt-PasswdMD5/commit/a2f821637db0296082297aa4b02254ab08f0dc5e.patch"
        },
        {
          "url": "https://metacpan.org/release/RSAVAGE/Crypt-PasswdMD5-1.42/source/lib/Crypt/PasswdMD5.pm#L35-47"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to version 1.43 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-04-14T00:00:00.000Z",
          "value": "Issue reported to CPANSec"
        },
        {
          "lang": "en",
          "time": "2026-04-20T00:00:00.000Z",
          "value": "Maintainer notified"
        },
        {
          "lang": "en",
          "time": "2026-05-08T00:00:00.000Z",
          "value": "Vulnerability published"
        },
        {
          "lang": "en",
          "time": "2026-05-23T00:00:00.000Z",
          "value": "Version 1.43 with fix uploaded to CPAN"
        }
      ],
      "title": "Crypt::PasswdMD5 versions through 1.42 for Perl generates insecure random values for salts",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
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  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-6659",
    "datePublished": "2026-05-08T17:17:01.357Z",
    "dateReserved": "2026-04-20T08:24:35.812Z",
    "dateUpdated": "2026-05-26T22:52:31.427Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.