---
id: CVE-2025-10018
title: >-
  QuickCMS is vulnerable to multiple Stored XSS in language editor functionality
  (languages)
summary: >-
  QuickCMS is vulnerable to multiple Stored XSS in language editor functionality
  (languages). Malicious attacker with admin privileges can inject arbitrary
  HTML and JS into website, which will be rendered/executed on every page. By
  default…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: opensolution
product: quick.cms
affected:
  - quick.cms = 6.8
published: '2025-11-14'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-10018'
references:
  - url: 'https://cert.pl/posts/2025/11/CVE-2025-9982'
    label: cvd@cert.pl
  - url: 'https://opensolution.org/cms-system-quick-cms.html'
    label: cvd@cert.pl
tags:
  - nvd
epss: 0.0018
epssPercentile: 0.06973
ingestedAt: '2026-10-07T21:54:15.038Z'
---

## Overview

QuickCMS is vulnerable to multiple Stored XSS in language editor functionality (languages). Malicious attacker with admin privileges can inject arbitrary HTML and JS into website, which will be rendered/executed on every page. By default admin user is not able to add JavaScript into the website.

The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.8 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

## Affected

- `quick.cms = 6.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.