{"id":"CVE-2021-35473","aliases":["DEBIAN-CVE-2021-35473","EUVD-2021-22115","GHSA-m833-cpj5-q368","UBUNTU-CVE-2021-35473"],"status":"published","title":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in...","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0041,"percentile":0.35707,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-613"],"published":"2024-11-10T00:00:00Z","modified":"2026-10-23T18:03:29Z","fixes":[{"ecosystem":"Debian:12","package":"lemonldap-ng","fixed_in":["2.0.11+ds-4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lemonldap-ng","fixed_in":["2.0.11+ds-4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lemonldap-ng","fixed_in":["2.0.11+ds-4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11+ds-4"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11+ds-4"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11+ds-4"}]}]},{"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"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.5+ds-2","2.0.6+ds-2","2.0.7+ds-2"]}],"products":[{"vendor":"lemonldap-ng","product":"lemonldap-ng"}],"references":[{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/tags","tags":["web"]},{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2549","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35473"},{"url":"https://github.com/advisories/GHSA-m833-cpj5-q368"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-35473","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-35473","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-35473","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-35473","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T00:00:00Z","modified":"2024-11-19T19:34:45.685Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-22115","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T00:00:00Z","modified":"2024-11-19T19:34:45Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T00:04:55.23264Z"}],"ghsa":[{"id":"GHSA-m833-cpj5-q368","title":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in...","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-11T00:30:44Z","modified":"2024-11-19T21:32:33Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:58:53.680904Z"}],"nvd":[{"id":"CVE-2021-35473","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T23:15:04.383Z","modified":"2026-06-17T03:57:32.037Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:07:08.629518Z"}],"osv":[{"id":"CVE-2021-35473","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T23:15:04.383Z","modified":"2026-10-20T10:49:44.755199567Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:20.13324Z"},{"id":"DEBIAN-CVE-2021-35473","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T23:15:04.383Z","modified":"2026-10-23T18:03:29.075186971Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"UBUNTU-CVE-2021-35473","description":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","status":"published","published":"2024-11-10T23:15:00Z","modified":"2025-10-24T04:50:25Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:54:27.870979Z"}]}}