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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 0 LOW 2

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 2 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 2 SQL injection 0

Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 0 No user interaction 1

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Weakness (CWE) CWE-79 Improper Neutralization of Input During Web Page Generation 2

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Release: Znuny 6.5.21, 7.3.3 × Clear all filters

TI-2026-37303 CVE-2026-50592 · GHSA-fjc3-384j-842g

Cross-site scripting in Znuny

Priority LOW 27

In Znuny LTS before 6.5.21 and Znuny before 7.3.3, there is reflected XSS in AdminCommunicationLog (aka the communication log administration view).

CVSS 3.1MEDIUM 6.4· Network · Low privileges · No interaction · EPSS 0.00148 · Published 2026-06-05 · Fixed in 6.5.21, 7.3.3 CWE-79

TI-2026-37302 CVE-2026-50591 · GHSA-qfgf-x7qr-jq6q

In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored user preferences.

Priority LOW 23

In Znuny LTS before 6.5.21 and Znuny before 7.3.3, XSS can occur via stored user preferences.

CVSS 3.1MEDIUM 5.4· Network · Low privileges · User interaction · EPSS 0.00133 · Published 2026-06-05 · Fixed in 6.5.21, 7.3.3 CWE-79

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