Incorrect authorization in Zulip Server - CVE-2026-25741
Published: April 22, 2026
Vulnerability identifier: #VU126821
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-25741
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to improper billing-specific authorization check. A remote user can change the organization’s payment method.
Affected software
Zulip Server
How to mitigate CVE-2026-25741
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.