Security advisory

{
  "id": "b62fd5828378f3db090173a59d4718f839ad060e7a2099a19efba7f0ce08a641",
  "url": "https://osv.dev/vulnerability/CVE-2018-1256",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1256",
    "summary": "Spring Cloud SSO Connector, version 2.1.2, contains a regression which disables issuer validation in resource servers that are not bound to the SSO service. In PCF deployments with multiple SSO service plans, a remote attacker can authenticate to unbound resource servers which use this version of the SSO Connector with tokens generated from another service plan.",
    "evidence": "osv:CVE-2018-1256",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-1256",
      "aliases": [
        "CVE-2018-1256",
        "GHSA-q4q2-93pw-qwgf"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pivotal-cf/spring-cloud-sso-connector",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9531430217eb95f9c70e1728d0213b605ffbaa2c"
                },
                {
                  "last_affected": "9531430217eb95f9c70e1728d0213b605ffbaa2c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:vmware:spring_cloud_sso_connector:2.1.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1.2"
                      },
                      {
                        "last_affected": "2.1.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.1.2",
            "2.1.2.RELEASE"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1256.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:21.336296947Z",
      "provider": "osv",
      "references": [
        "https://pivotal.io/security/cve-2018-1256"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1256",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430456,
  "published_at": "2018-05-07T16:22:00.217+00:00"
}