---
id: CVE-2026-50591
title: >-
  In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored
  user preferences.
summary: >-
  In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored
  user preferences.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-06-05'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T22:10:00.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-50591'
references:
  - url: 'https://www.znuny.org/en/advisories/zsa-2026-11'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00226
epssPercentile: 0.12172
ingestedAt: '2026-10-06T22:23:15.932Z'
---

## Overview

In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored user preferences.

## Remediation

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