CVE-2026-50591 Details
Description
In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored user preferences.
A stored cross-site scripting vulnerability has been identified in Znuny LTS versions prior to 6.5.21 and in Znuny versions prior to 7.3.3. This vulnerability allows for the execution of injected JavaScript through user preferences stored in the database. The issue arises because these values are rendered without adequate output encoding, enabling the execution of scripts when the affected preference is viewed in the browser within the user's session context.
Users can upgrade to Znuny LTS 6.5.21 or Znuny 7.3.3 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 5, 2026CISA-ADP
Assessed Jun 5, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.znuny.org/en/advisories/zsa-2026-11 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Znuny | >= 7.3.1, <= 7.3.2 (semver) 6.0 6.1 6.2 6.3 6.4 7.0 7.1 7.2 |
CPE
Remediation
| |
| Znuny LTS | >= 6.5.1, <= 6.5.20 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 5, 2026 | New CVE Received | [email protected] |