An issue was discovered in LemonLDAP::NG before 2.16.1.
Priority HIGH 82CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00957 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng:*:*:*:*:*:*:*:* | ng | Vulnerable | lemonldap-ng |
- cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng:*:*:*:*:*:*:*:* Versions ng Vulnerable ·lemonldap-ng
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28862
- 2026-10-03 Alias added: GHSA-r74q-xwhp-q6r9
References
More lemonldap-ng Lemonldap vulnerabilities
- TI-2024-32628 A cross-site scripting (XSS) vulnerability in LemonLDAP::NG before 2.19.3 allows remote… CVSS 3.1MEDIUM 6.1
- TI-2022-17335 In LemonLDAP::NG before 2.0.15. CVSS 3.1MEDIUM 5.9
- TI-2023-23963 A Server-Side Request Forgery issue in the OpenID Connect Issuer in LemonLDAP::NG before… CVSS 3.1MEDIUM 4.3
- TI-2019-14263 In LemonLDAP::NG (aka lemonldap-ng) before 2.0.7, the default Apache HTTP Server… CVSS 3.1CRITICAL 9.8
- TI-2019-09012 LemonLDAP::NG -2.0.3 has Incorrect Access Control. CVSS 3.0CRITICAL 9.8
- TI-2020-15127 An issue was discovered in LemonLDAP::NG through 2.0.8, when NGINX is used. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-28862 · CVE Program
- CVE-2023-28862 · NVD
- FIRST EPSS
- GHSA-r74q-xwhp-q6r9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences