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Zulip Template

1 CVEs product

Monthly

CVE-2026-16504 Jul 31, 15:19 CRITICAL Act Now

Credential and cryptographic-key exposure in the VPS.org one-click Zulip deployment template ships every instance with an identical hardcoded application signing key, a default database password of "zulip", and HTTPS disabled (DISABLE_HTTPS=True), allowing remote attackers who know the public template defaults to forge authenticated sessions, read Zulip's database, and intercept traffic. Any organization that provisioned Zulip through this VPS.org one-click image is affected until the secrets are rotated. There is no public exploit identified at time of analysis, and the EPSS score is low (0.13%, 3rd percentile), but SSVC rates technical impact as total and automatable, reflecting that the shared secrets are identical across all deployments.

Information Disclosure Zulip Template
NVD VulDB
CVSS 3.1
9.8
EPSS
0.1%
EPSS 0% CVSS 9.8
CRITICAL Act Now

Credential and cryptographic-key exposure in the VPS.org one-click Zulip deployment template ships every instance with an identical hardcoded application signing key, a default database password of "zulip", and HTTPS disabled (DISABLE_HTTPS=True), allowing remote attackers who know the public template defaults to forge authenticated sessions, read Zulip's database, and intercept traffic. Any organization that provisioned Zulip through this VPS.org one-click image is affected until the secrets are rotated. There is no public exploit identified at time of analysis, and the EPSS score is low (0.13%, 3rd percentile), but SSVC rates technical impact as total and automatable, reflecting that the shared secrets are identical across all deployments.

Information Disclosure Zulip Template
NVD VulDB

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