High severity · published Jan 16, 2026
CVE-2025-31510
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…
7.2
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LE
LemonLDAP::NG · lemonldap-ng
2.0.8 before 2.16.5; 2.17.0 before 2.21.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-31510
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-31510
gitlab.ow2.org
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/3341
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/04/msg00017.html
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