{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.3.3"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "73459f0348135013952146196d94e0d065f62739"
            }
          ],
          "repo": "https://github.com/mitreid-connect/openid-connect-java-spring-server",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "The OpenID Connect server implementation for MITREid Connect through 1.3.3 contains a Server Side Request Forgery (SSRF) vulnerability. The vulnerability arises due to unsafe usage of the logo_uri parameter in the Dynamic Client Registration request. An unauthenticated attacker can make a HTTP request from the vulnerable server to any address in the internal network and obtain its response (which might, for example, have a JavaScript payload for resultant XSS). The issue can be exploited to bypass network boundaries, obtain sensitive data, or attack other hosts in the internal network.",
  "id": "CVE-2021-26715",
  "modified": "2026-03-13T21:49:46.108573831Z",
  "published": "2021-03-25T09:15:12.633Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/releases"
    },
    {
      "type": "EVIDENCE",
      "url": "https://portswigger.net/research/hidden-oauth-attack-vectors"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}