Security advisory

{
  "id": "430514c707e11b68dc43978d75267971739cce6169bff43cc20518103afade12",
  "url": "https://osv.dev/vulnerability/CVE-2021-27582",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27582",
    "summary": "org/mitre/oauth2/web/OAuthConfirmationController.java in the OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Mass Assignment (aka Autobinding) vulnerability. This arises due to unsafe usage of the @ModelAttribute annotation during the OAuth authorization flow, in which HTTP request parameters affect an authorizationRequest.",
    "evidence": "osv:CVE-2021-27582",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-27582",
      "aliases": [
        "CVE-2021-27582",
        "GHSA-8p36-q63g-68qh"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mitreid-connect/openid-connect-java-spring-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "73459f0348135013952146196d94e0d065f62739"
                },
                {
                  "fixed": "7eba3c12fed82388f917e8dd9b73e86e3a311e4c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mitreid:connect:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.3.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7eba3c12fed82388f917e8dd9b73e86e3a311e4c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "mitreid-connect-1.3.3",
            "mitreid-connect-1.3.2",
            "mitreid-connect-1.3.1",
            "mitreid-connect-1.3.0",
            "mitreid-connect-1.3.0-RC2",
            "mitreid-connect-1.3.0-RC1",
            "mitreid-connect-1.2.6",
            "mitreid-connect-1.2.5",
            "mitreid-connect-1.2.4",
            "mitreid-connect-1.2.3",
            "mitreid-connect-1.2.2",
            "mitreid-connect-1.2.1",
            "mitreid-connect-1.2.0",
            "mitreid-connect-1.2.0-RC2",
            "mitreid-connect-1.2.0-RC1",
            "mitreid-connect-1.1.9",
            "mitreid-connect-1.1.8",
            "mitreid-connect-1.1.7",
            "mitreid-connect-1.1.6",
            "mitreid-connect-1.1.5",
            "mitreid-connect-1.1.4",
            "mitreid-connect-1.1.3",
            "mitreid-connect-1.1.2",
            "mitreid-connect-1.1.1",
            "mitreid-connect-1.1.0",
            "iss294-0.9",
            "iss294-start",
            "M2-pre-data-model-changes",
            "M-3",
            "M-2",
            "M-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27582.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-27582-ba65909a",
                "digest": {
                  "length": 3249,
                  "function_hash": "331323756972400497807701271783561924022"
                },
                "source": "https://github.com/mitreid-connect/openid-connect-java-spring-server/commit/7eba3c12fed82388f917e8dd9b73e86e3a311e4c",
                "target": {
                  "file": "openid-connect-server/src/main/java/org/mitre/oauth2/web/OAuthConfirmationController.java",
                  "function": "confimAccess"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-27582-c27f5ae3",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "259347651145437691049013431933483762765",
                    "297901340302487054581137067050141467193",
                    "258519029864756625359601058265158894530",
                    "80683396604422368032150391326970818942",
                    "209744033836646674392746522741592316847"
                  ]
                },
                "source": "https://github.com/mitreid-connect/openid-connect-java-spring-server/commit/7eba3c12fed82388f917e8dd9b73e86e3a311e4c",
                "target": {
                  "file": "openid-connect-server/src/main/java/org/mitre/oauth2/web/OAuthConfirmationController.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:17:34Z"
          }
        }
      ],
      "modified": "2026-10-20T14:17:34.410377541Z",
      "provider": "osv",
      "references": [
        "https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/commit/7eba3c12fed82388f917e8dd9b73e86e3a311e4c",
        "https://portswigger.net/research/hidden-oauth-attack-vectors"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27582",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388792,
  "published_at": "2021-02-23T18:15:14.363+00:00"
}