Security advisory

{
  "id": "2a33bd5918fed95903eb75f8e417dc0505753fcac79229a306562c5054100b74",
  "url": "https://osv.dev/vulnerability/CVE-2024-33531",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2024-33531",
    "summary": "cdbattags lua-resty-jwt 0.2.3 allows attackers to bypass all JWT-parsing signature checks by crafting a JWT with an enc header with the value A256GCM.",
    "evidence": "osv:CVE-2024-33531",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-33531",
      "aliases": [
        "CVE-2024-33531"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cdbattags/lua-resty-jwt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d1558e2afefe868fea1e7e9a4b04ea94ab678a85"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "d1558e2afefe868fea1e7e9a4b04ea94ab678a85"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0",
            "v0.1.11",
            "v0.1.10",
            "v0.1.9",
            "v0.1.8",
            "v0.1.7",
            "v0.1.6",
            "v0.1.5",
            "v0.1.4",
            "v0.1.2",
            "v0.1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-33531.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.244751840Z",
      "provider": "osv",
      "references": [
        "https://insinuator.net/2023/10/lua-resty-jwt-authentication-bypass/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/33xxx/CVE-2024-33531.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-33531",
        "https://github.com/cdbattags/lua-resty-jwt/issues/61",
        "https://github.com/cdbattags/lua-resty-jwt/commit/d1558e2afefe868fea1e7e9a4b04ea94ab678a85"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/33xxx/CVE-2024-33531.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-33531",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488527,
  "published_at": "2024-04-24T00:00:00+00:00"
}