WWBN AVideo Weak PRNG Password Generation via External Login

{
  "id": "b793da0ac83501f46fe5b8839530ec844925bdc0451cc899d138fb8960302998",
  "url": "https://osv.dev/vulnerability/CVE-2026-86187",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "WWBN AVideo Weak PRNG Password Generation via External Login",
    "summary": "WWBN AVideo generates passwords for external-login accounts using rand() instead of a cryptographic generator, producing only 31-bit integers. Attackers with access to password hashes can recover plaintext passwords in minutes through offline brute-force attacks due to unsalted MD5-based hashing.",
    "evidence": "osv:CVE-2026-86187",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-86187",
      "aliases": [
        "CVE-2026-86187",
        "GHSA-h3ff-c2qq-pr2g"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wwbn/avideo",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2386f39caea1d2ef36267b252fa76af283294623"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "29.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "29.0",
            "26.0",
            "25.0",
            "24.0",
            "22.0",
            "21.0",
            "18.0",
            "14.3.1",
            "14.3",
            "12.4",
            "11.6",
            "11.5",
            "11.1.1",
            "11.1",
            "11",
            "10.8",
            "8.9.1",
            "8.9",
            "8.7",
            "8.6",
            "8.5",
            "8.1",
            "7.8",
            "7.7",
            "7.6",
            "7.4",
            "7.3",
            "7.2",
            "4.0",
            "3.4",
            "2.7",
            "2.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86187.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.361640774Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86187.json",
        "https://github.com/WWBN/AVideo/security/advisories/GHSA-h3ff-c2qq-pr2g",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-86187",
        "https://www.vulncheck.com/advisories/wwbn-avideo-weak-prng-password-generation-via-external-login"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-330"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86187.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-86187",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492026,
  "published_at": "2026-09-05T12:09:03.422+00:00"
}