Vulnerability Database

319,195

Total vulnerabilities in the database

CVE-2021-40874

An issue was discovered in LemonLDAP::NG (aka lemonldap-ng) 2.0.13. When using the RESTServer plug-in to operate a REST password validation service (for another LemonLDAP::NG instance, for example) and using the Kerberos authentication method combined with another method with the Combination authentication plug-in, any password will be recognized as valid for an existing user.

  • Published: Jul 18, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-40874
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

OWASP TOP 10:

Software From Fixed in
lemonldap-ng / lemonldap--ng 2.0.13 2.0.13.x
debian / debian_linux 10.0 10.0.x