CVE-2025-31510

In the portal in LemonLDAP::NG before 2.21.0, cross-site scripting (XSS) allows remote attackers...

7.2 HighFix available

In the portal in LemonLDAP::NG before 2.21.0, cross-site scripting (XSS) allows remote attackers to inject arbitrary web script or HTML (into the login page) via the tab parameter, for Choice authentication.

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: Low
Integrity: Low
Availability: None

Exploit likelihood

0.38%Up 0.3 points since Jan 17, 2026

What each source reports

CVE List Score used 7.2

Record: CVE-2025-31510
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-2905 7.2

Record: EUVD-2026-2905
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-55mm-vp96-5r7h 7.2

In the portal in LemonLDAP::NG before 2.21.0, cross-site scripting (XSS) allows remote attackers...

Record: GHSA-55mm-vp96-5r7h
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.2

Record: CVE-2025-31510
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.2

Record: CVE-2025-31510
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-31510 7.2

Record: DEBIAN-CVE-2025-31510
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-31510 7.2

Record: UBUNTU-CVE-2025-31510
CVSS 3.1: 7.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

Affected products

lemonldap-ng lemonldap::ng

Affected packages

Affected packages
Package	Affected	Fixed
`lemonldap-ng` Debian:12	before 2.16.1+ds-deb12u6, plus listed versions 2.16.1+ds-22.16.1+ds-deb12u12.16.1+ds-deb12u22.16.1+ds-deb12u32.16.1+ds-deb12u42.16.1+ds-deb12u5	2.16.1+ds-deb12u6
`lemonldap-ng` Debian:13	before 2.21.0+ds-1	2.21.0+ds-1
`lemonldap-ng` Debian:14	before 2.21.0+ds-1	2.21.0+ds-1
`lemonldap-ng` Debian:11	before 2.0.11+ds-4+deb11u7, plus listed versions 2.0.11+ds-42.0.11+ds-4+deb11u12.0.11+ds-4+deb11u22.0.11+ds-4+deb11u42.0.11+ds-4+deb11u52.0.11+ds-4+deb11u6	2.0.11+ds-4+deb11u7
`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
`lemonldap-ng` Ubuntu:25.10	All versions, plus listed versions 2.20.2+ds-1build12.21.0+ds-3	None known

History

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

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

In short

CVE-2025-31510 is a high vulnerability (CVSS 7.2) in Lemonldap-ng Lemonldap::ng, published April 8, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 31st percentile. Fixed in lemonldap-ng 2.16.1+ds-deb12u6.