#VU107580 Improper Authentication in Zulip Server - CVE-2025-31478

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Main Vulnerability Database Vulnerabilities #VU107580

#VU107580 Improper Authentication in Zulip Server - CVE-2025-31478

Published: April 17, 2025


Vulnerability identifier: #VU107580
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-31478
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Zulip Server
Software vendor:
Zulip

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authentication backend configuration bypass. A remote attacker can create an account without having an account with the configured SSO authentication backend.


Remediation

Install updates from vendor's website.

External links