Vulnerability-Lookup

FKIE_CVE-2026-8647

Vulnerability from fkie_nvd - Published: 2026-05-26 23:16 - Updated: 2026-05-27 19:38

Severity

Summary

Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available. The random_bytes function fell back to using the built-in rand() function when none of the Perl modules Crypt::PRNG, Crypt::OpenSSL::Random, Net::SSLeay, Crypt::Random, or Bytes::Random::Secure were available.

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/changes
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/diff/MIK/Crypt-ScryptKDF-0.010#lib/Crypt/ScryptKDF.pm
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/05/26/8

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available.\n\nThe random_bytes function fell back to using the built-in rand() function when none of the Perl modules Crypt::PRNG, Crypt::OpenSSL::Random, Net::SSLeay, Crypt::Random, or Bytes::Random::Secure were available."
    }
  ],
  "id": "CVE-2026-8647",
  "lastModified": "2026-05-27T19:38:33.270",
  "metrics": {},
  "published": "2026-05-26T23:16:21.247",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/changes"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/diff/MIK/Crypt-ScryptKDF-0.010#lib/Crypt/ScryptKDF.pm"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/26/8"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-338"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

CVE-2026-8647 (GCVE-0-2026-8647)

Vulnerability from cvelistv5 – Published: 2026-05-26 22:53 – Updated: 2026-05-27 01:41

Title

Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available

Summary

Severity

No CVSS data available.

CWE

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator

Assigner

CPANSec

References

2 references

URL	Tags
https://metacpan.org/release/MIK/Crypt-ScryptKDF-…	release-notes
https://metacpan.org/release/MIK/Crypt-ScryptKDF-…

Impacted products

1 product

Vendor	Product	Version
MIK	Crypt::ScryptKDF	Affected: 0 , ≤ 0.010 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-27T01:41:36.078Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/05/26/8"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Crypt-ScryptKDF",
          "product": "Crypt::ScryptKDF",
          "programFiles": [
            "lib/Crypt/ScryptKDF.pm"
          ],
          "programRoutines": [
            {
              "name": "Crypt::ScryptKDF::random_bytes"
            }
          ],
          "repo": "https://github.com/DCIT/perl-Crypt-ScryptKDF",
          "vendor": "MIK",
          "versions": [
            {
              "lessThanOrEqual": "0.010",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available.\n\nThe random_bytes function fell back to using the built-in rand() function when none of the Perl modules Crypt::PRNG, Crypt::OpenSSL::Random, Net::SSLeay, Crypt::Random, or Bytes::Random::Secure were available."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-338",
              "description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-26T22:53:49.993Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/changes"
        },
        {
          "url": "https://metacpan.org/release/MIK/Crypt-ScryptKDF-0.011/diff/MIK/Crypt-ScryptKDF-0.010#lib/Crypt/ScryptKDF.pm"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to version 0.011 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-13T00:00:00.000Z",
          "value": "Issue reported to CPANSec"
        },
        {
          "lang": "en",
          "time": "2026-05-14T00:00:00.000Z",
          "value": "Issue reported to maintainer"
        },
        {
          "lang": "en",
          "time": "2026-05-16T00:00:00.000Z",
          "value": "Version 0.011 with fix released."
        }
      ],
      "title": "Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available",
      "workarounds": [
        {
          "lang": "en",
          "value": "Install one of the recommended Perl modules, such as Crypt::PRNG."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-8647",
    "datePublished": "2026-05-26T22:53:49.993Z",
    "dateReserved": "2026-05-14T22:46:50.791Z",
    "dateUpdated": "2026-05-27T01:41:36.078Z",
    "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.

Action not permitted

FKIE_CVE-2026-8647

CVE-2026-8647 (GCVE-0-2026-8647)

Tags

Sightings

Nomenclature