Stored Cross-Site Scripting in Perx Customer Engagement & Loyalty Platform

published 2025-10-27 12 mo ago modified 2026-10-08 31 d ago also EUVD-2025-36121

cvss: 7.1; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits: 0; none known

Stored cross-site scripting (XSS) vulnerability in the LMT Dashboard of the Perx Customer Engagement & Loyalty Platform allows an authenticated attacker to execute arbitrary JavaScript code in a victim's browser. The vulnerability is due to improper sanitization of SVG file uploads. An attacker can upload a malicious SVG file containing a script payload to a campaign. When another user views this image on the public LMT microsite, the script executes, which can lead to session hijacking, data theft, or other unauthorized actions.This issue affects Customer Engagement & Loyalty Platform before 4.617.4.

Patch / fix

fixed in 1

Perx Technologies Customer Engagement & Loyalty Platform 4.617.4

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 12 mo ago (2025-10-27)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.1	CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:L
CNA	4.0	7.1	CVSS:4.0/AV:A/AC:H/AT:N/PR:H/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Perx Technologies Customer Engagement & Loyalty Platform

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-83 Improper Neutralization of Script in Attributes in a Web Page

References

redguard.ch /blog/2025/10/27/advisory-perx-lmt-dashboard/

Sources

CVE List CVE-2025-11682
NVD CVE-2025-11682

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