Security advisory

{
  "id": "5d1a267bb952cfbc1e10d33543d5be6530a2bec43ba3b70e6ef6386524f0545f",
  "url": "https://osv.dev/vulnerability/CVE-2020-37281",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-37281",
    "summary": "Gravitee API Management through 4.12.22 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to impersonate any user by forging JWTs signed with the shipped default jwt.secret. Attackers knowing an existing user ID can sign an HS256 token with that subject and present it as a bearer token to the Management API, impersonating administrators to gain full platform control.",
    "evidence": "osv:CVE-2020-37281",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-37281",
      "aliases": [
        "CVE-2020-37281"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gravitee-io/gravitee-api-management",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "72624b2d97c152a589f8712bd2cdeae686afaecf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.12.22"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.12.22",
            "4.12.21",
            "4.12.20",
            "4.12.19",
            "4.12.18",
            "4.12.17",
            "4.12.16",
            "4.12.15",
            "4.12.14",
            "4.12.13",
            "4.12.12",
            "4.12.11",
            "4.12.10",
            "4.12.9",
            "4.12.8",
            "4.12.7",
            "4.12.6",
            "4.12.5",
            "4.12.4",
            "4.12.3",
            "4.12.2",
            "4.12.1",
            "4.12.0",
            "4.12.0-milestone.6",
            "4.12.0-milestone.5",
            "4.12.0-milestone.4",
            "4.12.0-milestone.3",
            "4.12.0-milestone.2",
            "4.12.0-milestone.1",
            "4.12.0-alpha.1",
            "3.15.0",
            "3.13.0",
            "3.12.0",
            "3.11.0",
            "3.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-37281.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:21.737368594Z",
      "provider": "osv",
      "references": [
        "https://github.com/gravitee-io/gravitee-api-management/blob/4.12.22/gravitee-apim-rest-api/gravitee-apim-rest-api-management/gravitee-apim-rest-api-management-security/src/main/java/io/gravitee/rest/api/management/security/config/BasicSecurityConfigurerAdapter.java#L157-L175",
        "https://github.com/gravitee-io/gravitee-api-management/blob/4.12.22/gravitee-apim-rest-api/gravitee-apim-rest-api-standalone/gravitee-apim-rest-api-standalone-distribution/src/main/resources/config/gravitee.yml#L636-L637",
        "https://github.com/gravitee-io/gravitee-api-management/blob/4.12.22/helm/values.yaml#L103",
        "https://github.com/gravitee-io/gravitee-docs/blob/master/pages/apim/3.x/how-tos/how-to-general-configuration.adoc",
        "https://www.vulncheck.com/advisories/gravitee-api-management-through-4.12.22-default-jwt-secret-authentication-bypass",
        "https://github.com/gravitee-io/issues/issues/4204"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-37281",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385173,
  "published_at": "2026-10-14T15:16:59.37+00:00"
}