Security advisory

{
  "id": "e2f02027af5d528331200bffb8bfe9d35b3b5ff09e96e4cef03a5e49da09b6d2",
  "url": "https://osv.dev/vulnerability/CVE-2019-11027",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-11027",
    "summary": "Ruby OpenID (aka ruby-openid) through 2.8.0 has a remotely exploitable flaw. This library is used by Rails web applications to integrate with OpenID Providers. Severity can range from medium to critical, depending on how a web application developer chose to employ the ruby-openid library. Developers who based their OpenID integration heavily on the \"example app\" provided by the project are at highest risk.",
    "evidence": "osv:CVE-2019-11027",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-11027",
      "aliases": [
        "CVE-2019-11027",
        "GHSA-fqfj-cmh6-hj49"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openid/ruby-openid",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "a8e643d194acc35c7d5890109b14e0c6f590a1fe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openid:ruby-openid:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.8.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.8.0",
            "v2.7.0",
            "v2.6.0",
            "v2.5.0",
            "v2.4.0",
            "v2.3.0",
            "v2.2.3",
            "v2.2.2",
            "v2.2.1",
            "v2.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11027.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:36.501826349Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html",
        "https://marc.info/?l=openid-security&m=155154717027534&w=2",
        "https://security.gentoo.org/glsa/202003-09",
        "https://github.com/openid/ruby-openid/issues/122"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-11027",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382636,
  "published_at": "2019-06-10T19:29:00.607+00:00"
}