CVE-2026-16504
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
Deployment of the VPS.org one-click Zulip template includes a hardcoded application signing key, a default database password ("zulip"), and DISABLE_HTTPS=True.
Risk Assessment
An attacker can exploit these default credentials and lack of HTTPS encryption to take over the admin account, steal data, or impersonate the application.
Recommendation
Immediately change the application signing key, database password, and enable HTTPS (set DISABLE_HTTPS=False) after deploying the template.
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Original NVD description (English source)
Deployment of the VPS.org one-click Zulip template deploys a hardcoded application signing key, a default database password ("zulip"), and DISABLE_HTTPS=True.