# CVE-2023-28862: lemonldap-ng: An issue was discovered in LemonLDAP::NG before 2.16.1

CVE-2023-28862 is fixed in lemonldap-ng on 1 platform, first by DEBIAN-CVE-2023-28862, released March 31, 2023. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2023-28862
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0096
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 31, 2023

## Description

An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | lemonldap-ng Debian 12.15 (bookworm) | 2.16.1+ds-1 | [DEBIAN-CVE-2023-28862](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28862.md) | Mar 31, 2023 |
| Linux | lemonldap-ng Debian 13.5 (trixie) | 2.16.1+ds-1 | [DEBIAN-CVE-2023-28862](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28862.md) | Mar 31, 2023 |
| Linux | lemonldap-ng Debian 14 | 2.16.1+ds-1 | [DEBIAN-CVE-2023-28862](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28862.md) | Mar 31, 2023 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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