A cross-site scripting (XSS) vulnerability in LemonLDAP::NG before 2.20.1 allows remote attackers to inject arbitrary web script or HTML vi…

published 2024-11-18 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-45981

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits: 0; none known

A cross-site scripting (XSS) vulnerability in LemonLDAP::NG before 2.20.1 allows remote attackers to inject arbitrary web script or HTML via the url parameter of the upgrade session confirmation page (upgradeSession / forceUpgrade) if the "Upgrade session" plugin has been enabled by an admin

Patch / fix

distros 1

lemonldap-ng Debian 12 2.16.1+ds-deb12u4
lemonldap-ng Debian 14, Debian 13 2.20.1+ds-1

debian advisories DEBIAN-CVE-2024-52947

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-52947 updated 2025-11-21 cvss 6.1

lemonldap-ng: XSS Vulnerability in LemonLDAP::NG Upgrade Session Plugin

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-18)

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

CVE List CVE-2024-52947
NVD CVE-2024-52947

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary