Vulnerability · Published Jan 16, 2026 · Assigned by mitre
CVE-2025-31510
High 7.2
In plain English
A high-severity cross-site scripting in LemonLDAP::NG from lemonldap-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.4%top 68.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | lemonldap-ng | 2.16.1+ds-deb12u6 | DSA-5897-1 |
| Debian:12 | lemonldap-ng | 2.16.1+ds-deb12u6 | DEBIAN-CVE-2025-31510 |
| Debian:13 | lemonldap-ng | 2.21.0+ds-1 | DEBIAN-CVE-2025-31510 |
| Debian:14 | lemonldap-ng | 2.21.0+ds-1 | DEBIAN-CVE-2025-31510 |
| Ubuntu:22.04:LTS | lemonldap-ng | no fix listed | UBUNTU-CVE-2025-31510 |
| Ubuntu:24.04:LTS | lemonldap-ng | no fix listed | UBUNTU-CVE-2025-31510 |
| Ubuntu:25.10 | lemonldap-ng | no fix listed | UBUNTU-CVE-2025-31510 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| lemonldap-ng | LemonLDAP::NG | 2.0.8 – before 2.16.52.17.0 – before 2.21.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N