CVE-2026-50591
BaseFortify
Publication date: 2026-06-05
Last updated on: 2026-06-05
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| znuny | znuny | to 7.3.2 (inc) |
| znuny | znuny | to 6.5.20 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Stored Cross-Site Scripting (XSS) issue found in Znuny versions before 6.5.21 (LTS) and before 7.3.3 (standard releases). It occurs because user preferences are stored in the database without proper output encoding. When these stored preferences are viewed in a user's browser session, malicious JavaScript code can execute.
How can this vulnerability impact me? :
This vulnerability can allow an attacker to execute malicious JavaScript in the context of a user's browser session. This can lead to unauthorized actions such as stealing user credentials, hijacking sessions, or performing actions on behalf of the user without their consent. The vulnerability has a medium severity rating.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability is a stored Cross-Site Scripting (XSS) issue involving user preferences stored in the database and executed in the user's browser. Detection typically involves inspecting stored user preference data for malicious JavaScript payloads.
There are no specific commands provided in the available resources to detect this vulnerability on your network or system.
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to upgrade Znuny to version 6.5.21 or later for LTS releases, or to version 7.3.3 or later for standard releases, where this vulnerability has been fixed.
Until the upgrade can be performed, consider reviewing and sanitizing stored user preferences to remove any malicious scripts, and restrict user input where possible to reduce the risk of stored XSS.