CVE-2024-45160

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-09 · updated 2026-06-17
Weakness: CWE-863

Description

Incorrect credential validation in LemonLDAP::NG 2.18.x and 2.19.x before 2.19.2 allows attackers to bypass OAuth2 client authentication via an empty client_password parameter (client secret).

Affected products

Lemonldap-Ng: from 2.18.0 before 2.19.2 — fixed in 2.19.2

How to fix

Upgrade to a fixed version: Lemonldap-Ng 2.19.2. Check the vendor advisory for mitigations.

References

https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/06d771cbc2d5c752354c50f83e4912e5879f9aa2
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/236cdfe42c1dc04a15a4a40c5e6a8c2e858d71d7
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/696f49a0855faeb271096dccb8381e2129687c3d
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/3223
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/tags

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