Security advisory

{
  "id": "8a283982a2f9c51134c983aba478b0abc38feba163124391d90a0b1b4cf4443f",
  "url": "https://osv.dev/vulnerability/CVE-2016-5431",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-5431",
    "summary": "The PHP JOSE Library by Gree Inc. before version 2.2.1 is vulnerable to key confusion/algorithm substitution in the JWS component resulting in bypassing the signature verification via crafted tokens.",
    "evidence": "osv:CVE-2016-5431",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-5431",
      "aliases": [
        "CVE-2016-5431",
        "GHSA-xm5f-hc9r-76f3"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nov/jose-php",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "445d702ffc8b17abd22d664b334a4046a0ed0b8e"
                },
                {
                  "fixed": "1cce55e27adf0274193eb1cd74b927a398a3df4b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:php_jose_project:php_jose:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1cce55e27adf0274193eb1cd74b927a398a3df4b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.2.0",
            "2.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-5431.json"
          }
        }
      ],
      "modified": "2026-10-20T10:47:54.250202776Z",
      "provider": "osv",
      "references": [
        "https://github.com/nov/jose-php/commit/1cce55e27adf0274193eb1cd74b927a398a3df4b"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-5431",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 379815,
  "published_at": "2019-08-07T15:15:11.783+00:00"
}