Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens

{
  "id": "a490ca0c290e2c67e98f4111b16f32611445db6b7bc51e54d8945b35effeaef9",
  "url": "https://osv.dev/vulnerability/CVE-2025-40915",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens",
    "summary": "Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens. That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.",
    "evidence": "osv:CVE-2025-40915",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-40915",
      "aliases": [
        "CVE-2025-40915"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gryphonshafer/mojo-plugin-csrf",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0e8a088c37709430dc6c474ae05ae863a11e4c8e"
                },
                {
                  "last_affected": "0e8a088c37709430dc6c474ae05ae863a11e4c8e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.03"
                      },
                      {
                        "last_affected": "1.03"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.03",
            "v1.03"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40915.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.094334666Z",
      "provider": "osv",
      "references": [
        "https://cpan.org/modules",
        "https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CSRF-1.04/changes",
        "https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CSRF-1.04/diff/GRYPHON/Mojolicious-Plugin-CSRF-1.03",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40915.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40915",
        "https://github.com/gryphonshafer/Mojo-Plugin-CSRF"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-338"
        ],
        "cna_assigner": "CPANSec",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40915.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40915",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509934,
  "published_at": "2025-06-11T17:09:50.664+00:00"
}