CVE-2021-40874

unknown

Published — · Modified —

CVSS v3

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CVSS v2

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VIR risk

—

Description

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-40874

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`2.0.14+ds-1`
debian	bullseye	fixed	`2.0.11+ds-4+deb11u1`
debian	forky	fixed	`2.0.14+ds-1`
debian	sid	fixed	`2.0.14+ds-1`
debian	trixie	fixed	`2.0.14+ds-1`

References

https://security-tracker.debian.org/tracker/CVE-2021-40874

Verify integrity in audit chain (admin only). AS-IS.