CVE-2026-50592
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_lts | to 6.5.21 (exc) |
| znuny | znuny | to 7.3.3 (exc) |
| znuny | znuny | 6.0 |
| znuny | znuny | 6.1 |
| znuny | znuny | 6.2 |
| znuny | znuny | 6.3 |
| znuny | znuny | 6.4 |
| znuny | znuny | 7.0 |
| znuny | znuny | 7.1 |
| znuny | znuny | 7.2 |
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 reflected Cross-Site Scripting (XSS) issue found in the communication log administration view (AdminCommunicationLog) of Znuny. It occurs because URL parameters are rendered into the page output without proper escaping, which allows an attacker to inject arbitrary JavaScript code via a specially crafted URL.
When an authenticated administrator opens this crafted URL, the injected JavaScript executes in their browser within the security context of their session.
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized execution of malicious scripts in the browser of an authenticated administrator. This can result in the attacker hijacking the administrator's session, stealing sensitive information, or performing actions on behalf of the administrator.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability is a reflected Cross-Site Scripting (XSS) issue in the AdminCommunicationLog view of Znuny. Detection typically involves identifying if crafted URLs with malicious JavaScript payloads are being accessed or logged.
Since the vulnerability involves URL parameters being rendered without proper escaping, you can monitor web server logs or proxy logs for suspicious URLs containing JavaScript or typical XSS payload patterns targeting the AdminCommunicationLog endpoint.
Specific commands depend on your environment, but examples include using grep or similar tools to search logs for suspicious patterns. For example:
- grep -iE "<script|javascript:|onerror=|onload=" /path/to/your/webserver/access.log
- grep 'AdminCommunicationLog' /path/to/your/webserver/access.log | grep -iE "<script|javascript:"
Additionally, you can use web vulnerability scanners that support reflected XSS detection against the AdminCommunicationLog URL to identify if the vulnerability is present.
What immediate steps should I take to mitigate this vulnerability?
The primary mitigation is to upgrade Znuny to a fixed version: Znuny LTS 6.5.21 or later, or Znuny 7.3.3 or later.
Until you can upgrade, consider restricting access to the AdminCommunicationLog interface to trusted administrators only, and avoid clicking on suspicious or untrusted URLs that may contain malicious payloads.
Implementing web application firewall (WAF) rules to detect and block reflected XSS payloads targeting the AdminCommunicationLog endpoint can also help reduce risk.