Cross-Site Scripting Vulnerability in Znuny LTS Product
CVE-2026-77506

4.8MEDIUM

Key Information:

Vendor

Znuny

Status
Znuny
Vendor
CVE Published:
20 August 2026

What is CVE-2026-77506?

A vulnerability in the Znuny LTS product prior to version 6.5.22 allows for Cross-Site Scripting (XSS) through the AgentTicketEmailResend template. This security flaw could allow attackers to inject malicious scripts, compromising the integrity of the application and potentially leading to unauthorized actions performed by users without their consent.

Affected Version(s)

Znuny 6.0 < 6.5.22

References

https://www.znuny.org/en/advisories/zsa-2026-12

CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.