{"id":"CVE-2019-11027","aliases":["DEBIAN-CVE-2019-11027","DLA-1956-1","EUVD-2019-0532","GHSA-fqfj-cmh6-hj49","UBUNTU-CVE-2019-11027"],"status":"published","title":"ruby-openid SSRF via claimed_id request","description":"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.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02968,"percentile":0.87333,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-918"],"published":"2019-06-10T18:57:09Z","modified":"2026-10-20T10:51:36Z","fixes":[{"ecosystem":"RubyGems","package":"ruby-openid","fixed_in":["2.9.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"ruby-openid","fixed_in":["2.9.2debian-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ruby-openid","fixed_in":["2.9.2debian-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ruby-openid","fixed_in":["2.9.2debian-1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"ruby-openid","fixed_in":["2.5.0debian-1+deb8u1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.2debian-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.2debian-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.2debian-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0debian-1+deb8u1"}]}],"versions":["2.5.0debian-1"]},{"source":"osv","ecosystem":"RubyGems","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.0"}]}],"versions":["1.0","1.0.1","1.0.2","1.1.1","1.1.2","1.1.3","1.1.4","2.0.1","2.0.2","2.0.3","2.0.4","2.1.2","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.4.0","2.5.0","2.6.0","2.7.0","2.8.0"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.0debian-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ruby-openid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.0debian-1"]}],"products":[{"vendor":"openid","product":"ruby-openid"}],"references":[{"url":"https://marc.info/?l=openid-security\u0026m=155154717027534\u0026w=2","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/openid/ruby-openid/issues/122","tags":["x_refsource_MISC","x_transferred","report","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202003-09","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11027","tags":["advisory"]},{"url":"https://github.com/openid/ruby-openid/commit/d181a8a2099c64365a1d24b29f6b6b646673a131","tags":["web"]},{"url":"https://github.com/openid/ruby-openid/releases/tag/v2.9.0","tags":["web"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-openid/CVE-2019-11027.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-fqfj-cmh6-hj49"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-11027","tags":["advisory"]},{"url":"https://github.com/openid/ruby-openid","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2019-11027","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-11027","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-11027","description":"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.","status":"published","published":"2019-06-10T18:57:09Z","modified":"2024-08-04T22:40:15.991Z","updated_at":"2026-11-02T14:20:26.416173Z"}],"euvd":[{"id":"EUVD-2019-0532","description":"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.","status":"published","published":"2019-06-10T18:57:09Z","modified":"2024-08-04T22:40:15Z","updated_at":"2026-11-03T02:40:50.763878Z"}],"ghsa":[{"id":"GHSA-fqfj-cmh6-hj49","title":"ruby-openid SSRF via claimed_id request","description":"Ruby OpenID (aka ruby-openid) through 2.8.0 is vulnerable to SSRF. Ruby-openid performs discovery first, and then verification. This allows an attacker to change the URL used for discovery and trick the server into connecting to the URL, which might be a private server not publicly accessible. 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.","status":"published","published":"2019-06-13T16:15:56Z","modified":"2023-07-05T19:06:47Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:36:55.91458Z"}],"nvd":[{"id":"CVE-2019-11027","description":"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.","status":"published","published":"2019-06-10T19:29:00.607Z","modified":"2026-06-17T02:12:09.09Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:05:16.285679Z"}],"osv":[{"id":"CVE-2019-11027","description":"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.","status":"published","published":"2019-06-10T19:29:00.607Z","modified":"2026-10-20T10:51:36.501826349Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:10.383287Z"},{"id":"DEBIAN-CVE-2019-11027","description":"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.","status":"published","published":"2019-06-10T19:29:00.607Z","modified":"2026-09-21T07:01:58.928363112Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:31.170944Z"},{"id":"GHSA-fqfj-cmh6-hj49","title":"ruby-openid SSRF via claimed_id request","description":"Ruby OpenID (aka ruby-openid) through 2.8.0 is vulnerable to SSRF. Ruby-openid performs discovery first, and then verification. This allows an attacker to change the URL used for discovery and trick the server into connecting to the URL, which might be a private server not publicly accessible. 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.","status":"published","published":"2019-06-13T16:15:56Z","modified":"2024-02-16T08:09:34.961861Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:46:46.760785Z"},{"id":"UBUNTU-CVE-2019-11027","description":"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.","status":"published","published":"2019-06-10T19:29:00Z","modified":"2025-10-24T04:47:36Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"DLA-1956-1","title":"ruby-openid - security update","status":"published","published":"2019-10-11T00:00:00Z","modified":"2026-03-09T01:20:11.808217Z","updated_at":"2026-11-02T15:46:10.227108Z"}]}}