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TI-2026-54039 Aliases CVE-2026-77506GHSA-4mvf-wmjf-gpfv

Znuny before LTS 6.5.22 allows AgentTicketEmailResend template XSS.

Priority LOW 22CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Znuny before LTS 6.5.22 allows AgentTicketEmailResend template XSS.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00242 15th percentileScored 2026-11-07
Fix Fixed Znuny (Znuny): 6.5.22

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ZnunyZnuny6.0 to before 6.5.226.5.22Patch availableCNA
  • Znuny VendorZnuny Affected 6.0 to before 6.5.22 Fixed in 6.5.22 Patch available CNA

Remediation

  • Fix · CNA Znuny (Znuny) Fixed in 6.5.22

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77506
  2. 2026-10-03 Alias added: GHSA-4mvf-wmjf-gpfv

References

Other 1

  • TI-2025-19719 An issue was discovered in Znuny before 7.1.4. CVSS 3.1CRITICAL 9.8
  • TI-2025-19718 An Eval Injection issue was discovered in Znuny through 7.1.3. CVSS 3.1CRITICAL 9.8
  • TI-2025-19717 An issue was discovered in Znuny through 7.1.3. CVSS 3.1CRITICAL 9.8
  • TI-2025-19720 An issue was discovered in Znuny before 7.1.5. CVSS 3.1CRITICAL 9.1
  • TI-2024-21383 An issue was discovered in Znuny and Znuny LTS 6.0.31 through 6.5.7 and Znuny 7.0.1… CVSS 3.1CRITICAL 9.8
  • TI-2026-74584 Authentication bypass in Znuny via forged Remote-User header CVSS 4.0CRITICAL 9.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences