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CVE-2025-31510

Good to know:

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Date: January 15, 2026

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.

Severity Score

Related Resources (4)

https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/3341
https://nvd.nist.gov/vuln/detail/CVE-2025-31510
https://lists.debian.org/debian-lts-announce/2025/04/msg00017.html
https://www.mend.io/vulnerability-database/CVE-2025-31510

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade Version

Upgrade to version https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng.git - v2.16.5;https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng.git - v2.21.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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