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Vulnerability record · CVE-2026-16504 · published 31 July 2026

CVE-2026-16504: Insecure default initialization vulnerability

Deployment of the VPS.org one-click Zulip template deploys a hardcoded application signing key, a default database password ("zulip"), and DISABLE_HTTPS=True.

9.8 CVSS 3.1 Critical EPSS 0.48% · top 60.8% CWE-321 · CWE-321CWE-1188 · Insecure default initialization Deferred
9.8CVSS 3.1 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
8 Sep 2026Last modified by NVD

Description

Deployment of the VPS.org one-click Zulip template deploys a hardcoded application signing key, a default database password ("zulip"), and DISABLE_HTTPS=True.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://kb.cert.org/vuls/id/243636

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Source: NIST National Vulnerability Database (record CVE-2026-16504), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.