---
id: CVE-2026-16504
title: >-
  Deployment of the VPS.org one-click Zulip template deploys a hardcoded
  application signing key, a default database password ("zulip"), and
  DISABLE_HTTPS=True.
summary: >-
  Deployment of the VPS.org one-click Zulip template deploys a hardcoded
  application signing key, a default database password ("zulip"), and
  DISABLE_HTTPS=True.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-321
  - CWE-1188
  - CWE-1393
published: '2026-07-31'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T14:09:10.550'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16504'
references:
  - url: 'https://kb.cert.org/vuls/id/243636'
    label: cret@cert.org
tags:
  - nvd
epss: 0.00483
epssPercentile: 0.38936
ingestedAt: '2026-09-08T15:33:26.950Z'
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.