{"id":"CVE-2019-15941","aliases":["DEBIAN-CVE-2019-15941","DSA-4533-1","EUVD-2019-6842","GHSA-jq88-5p5w-x8c3","UBUNTU-CVE-2019-15941"],"status":"published","title":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access...","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02461,"percentile":0.84556,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2019-09-25T00:00:00Z","modified":"2026-10-20T10:50:45Z","fixes":[{"ecosystem":"Debian:12","package":"lemonldap-ng","fixed_in":["2.0.6+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lemonldap-ng","fixed_in":["2.0.6+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lemonldap-ng","fixed_in":["2.0.6+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"lemonldap-ng","fixed_in":["2.0.2+ds-7+deb10u2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.6+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.6+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.6+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2+ds-7+deb10u2"}]}],"versions":["2.0.2+ds-7+deb10u1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","1.4.6-1","1.4.6-2","1.4.6-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.10-1","1.9.13-2","1.9.14-1","1.9.15-1","1.9.16-2"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"lemonldap-ng","product":"lemonldap\\"}],"references":[{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2019/dsa-4533","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://seclists.org/bugtraq/2019/Sep/46","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-15941"},{"url":"https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out"},{"url":"https://github.com/advisories/GHSA-jq88-5p5w-x8c3"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-15941","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-15941","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-15941","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-15941","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T19:39:40Z","modified":"2024-08-05T01:03:32.341Z","updated_at":"2026-11-02T14:20:21.059499Z"}],"euvd":[{"id":"EUVD-2019-6842","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T19:39:40Z","modified":"2024-08-05T01:03:32Z","updated_at":"2026-11-03T02:40:34.136734Z"}],"ghsa":[{"id":"GHSA-jq88-5p5w-x8c3","title":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access...","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2022-05-24T16:56:50Z","modified":"2024-04-04T02:00:13Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:56:05.019773Z"}],"nvd":[{"id":"CVE-2019-15941","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T20:15:11.057Z","modified":"2026-06-17T02:21:22.967Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:05:30.039477Z"}],"osv":[{"id":"CVE-2019-15941","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T20:15:11.057Z","modified":"2026-10-20T10:50:45.42143079Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:11.361782Z"},{"id":"DEBIAN-CVE-2019-15941","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T20:15:11.057Z","modified":"2026-10-18T04:00:03.319412619Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:31.867036Z"},{"id":"UBUNTU-CVE-2019-15941","description":"OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.","status":"published","published":"2019-09-25T20:15:00Z","modified":"2025-10-24T04:47:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:20.325378Z"},{"id":"DSA-4533-1","title":"lemonldap-ng - security update","status":"published","published":"2019-09-25T00:00:00Z","modified":"2026-03-09T02:08:33.536468Z","updated_at":"2026-11-02T15:46:16.862196Z"}]}}