Improper Authentication in Kavita - CVE-2026-47202
Published: May 20, 2026
Vulnerability identifier: #VU131933
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47202
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to take over arbitrary user accounts, including administrator accounts.
The vulnerability exists due to improper authentication in JWT token validation when processing token requests for a specified username. A remote attacker can request a JWT for any user with knowledge of the username to take over arbitrary user accounts, including administrator accounts.
Affected software
Kavita
How to mitigate CVE-2026-47202
Install security update from vendor's website.
Kavita - update to 0.9.0.2