CVE-2024-45160

Incorrect credential validation in LemonLDAP::NG 2.18.x and 2.19.x before 2.19.2 allows attackers...

9.1 CriticalFix available

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).

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.52%Up 0.5 points since Oct 10, 2024

What each source reports

CVE List Score used 9.1

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).

Record: CVE-2024-45160
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-863
Updated: 2026-11-02

EUVDEUVD-2024-41340 9.1

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).

Record: EUVD-2024-41340
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gf98-qc2v-6xvh 9.1

Incorrect credential validation in LemonLDAP::NG 2.18.x and 2.19.x before 2.19.2 allows attackers...

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).

Record: GHSA-gf98-qc2v-6xvh
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-863
Updated: 2026-11-02

NVD 9.1

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).

Record: CVE-2024-45160
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-863
Updated: 2026-11-02

OSV 9.1

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).

Record: CVE-2024-45160
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2024-45160 9.1

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).

Record: DEBIAN-CVE-2024-45160
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-45160 9.1

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).

Record: UBUNTU-CVE-2024-45160
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

Affected products

lemonldap-ng

Affected packages

Affected packages
Package	Affected	Fixed
`lemonldap-ng` Debian:13	before 2.19.2+ds-1	2.19.2+ds-1
`lemonldap-ng` Debian:14	before 2.19.2+ds-1	2.19.2+ds-1
`lemonldap-ng` Ubuntu:16.04:LTS	All versions, plus listed versions 1.3.3-11.4.6-11.4.6-21.4.6-3	None known
`lemonldap-ng` Ubuntu:18.04:LTS	All versions, plus listed versions 1.9.10-11.9.13-21.9.14-11.9.15-11.9.16-2	None known
`lemonldap-ng` Ubuntu:20.04:LTS	All versions, plus listed versions 2.0.5+ds-22.0.6+ds-22.0.7+ds-2	None known
`lemonldap-ng` Ubuntu:22.04:LTS	All versions, plus listed versions 2.0.11+ds-42.0.13+ds-32.0.13+ds-3ubuntu1	None known
`lemonldap-ng` Ubuntu:24.04:LTS	All versions, plus listed versions 2.16.2+ds-12.17.1+ds-12.17.2+ds-12.17.2+ds-22.18.1+ds-12.18.2+ds-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-45160 is a critical vulnerability (CVSS 9.1) in Lemonldap-ng, published October 9, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. Fixed in lemonldap-ng 2.19.2+ds-1.

References

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