# CVE-2026-50592: Znuny reflected XSS in AdminCommunicationLog

Source: https://junglewise.ai/threats/cve-2026-50592-znuny-reflected-xss-in-admincommunicationlog  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-05. Updated: 2026-06-05  
License: CC BY 4.0 with a link back

CVE-2026-50592 · Severity: medium · CVSS 6.4 · Published 2026-06-05

Znuny, an open-source ticket request system, contains a security vulnerability in its communication log administration interface. An attacker can trick an administrator into clicking a malicious link, allowing the attacker to run unauthorized scripts in the administrator's browser. This could lead to the theft of session information or the performance of unauthorized actions within the ticketing system.

Technologies: [Znuny](https://junglewise.ai/threats/technologies/znuny), [Znuny LTS](https://junglewise.ai/threats/technologies/znuny-lts). Vendors: [Znuny](https://junglewise.ai/threats/vendors/znuny).

## Quick answers

**Is CVE-2026-50592 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-50592 being exploited in the wild.

**How severe is CVE-2026-50592?** Medium severity, with a CVSS score of 6.4, published 5 June 2026.

**Which products and versions are affected?** Znuny 6.0, 6.1, 6.2, 6.3, 6.4, 6.5.1 through 6.5.20; Znuny LTS 6.0, 6.1, 6.2, 6.3, 6.4, 6.5.1 through 6.5.20.

**Is there a fix for CVE-2026-50592?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-50592 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-50592?** Check whether you run Znuny or Znuny LTS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the AdminCommunicationLog (communication log administration view) of Znuny. The root cause is the failure to properly escape URL parameters before rendering them into the page output. An attacker can exploit this by crafting a malicious URL containing JavaScript payloads. When an authenticated administrator visits this URL, the script executes within their browser session. This vulnerability is tracked as CVE-2026-50592 and is fixed in Znuny LTS 6.5.21 and Znuny 7.3.3.

## Affected products

- Znuny Znuny LTS 6.0, 6.1, 6.2, 6.3, 6.4, 6.5.1 through 6.5.20
- Znuny Znuny 7.0, 7.1, 7.2, 7.3.1 through 7.3.2

## Timeline

- 2026-05-27: advisory: Vendor advisory ZSA-2026-10 released
- 2026-06-05: disclosed: CVE published to NVD

## References

- [https://www.znuny.org/en/advisories/zsa-2026-10](https://www.znuny.org/en/advisories/zsa-2026-10)

## Related threats

- [Znuny HTTPBasicAuth header spoofing authentication bypass](https://junglewise.ai/threats/cve-2026-93483-in-znuny-through-7-3-6-an-attacker-can-bypass-specific-standard)
- [Znuny AgentTicketEmailResend template XSS](https://junglewise.ai/threats/cve-2026-77506-znuny-agentticketemailresend-template-xss)
- [Znuny stored XSS in user preferences](https://junglewise.ai/threats/cve-2026-50591-znuny-stored-xss-in-user-preferences)
- [Znuny reflected XSS in customer.pl OTRSCustomerInterface parameter](https://junglewise.ai/threats/cve-2025-52204-znuny-reflected-xss-in-customer-pl-otrscustomerinterface)