Cross-site Scripting (XSS) Affecting znuny package, versions <6.5.22-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-ZNUNY-19197106
- published22 Aug 2026
- disclosed20 Aug 2026
Introduced: 20 Aug 2026
CVE-2026-77506 (opens in a new tab)How to fix?
Upgrade Debian:unstable znuny to version 6.5.22-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream znuny package and not the znuny package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Znuny before LTS 6.5.22 allows AgentTicketEmailResend template XSS.