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Vulnerability record · CVE-2025-66686 · published 7 January 2026

CVE-2025-66686: Grabaperch perch cross-site scripting vulnerability

Grabaperch · Perch

A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2. An authenticated attacker with administrative privileges can inject malicious JavaScript code into the “Help button url” setting within the admin panel. The injected payload is stored and executed when any authenticated user clicks the Help button, potentially leading to session hijacking, information disclosure, privilege escalation, and unauthorized administrative actions.

6.1 CVSS 3.1 Medium EPSS 0.22% · top 88.9% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A stored Cross-Site Scripting (XSS) vulnerability exists in Perch CMS version 3.2. An authenticated attacker with administrative privileges can inject malicious JavaScript code into the “Help button url” setting within the admin panel. The injected payload is stored and executed when any authenticated user clicks the Help button, potentially leading to session hijacking, information disclosure, privilege escalation, and unauthorized administrative actions.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mertdurum06/Perch-v3.2 Exploit
https://github.com/mertdurum06/Perch-v3.2/blob/main/Perch%20v3.2_Poc.txt ExploitThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-66686), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.