Input validation error in Phusion Passenger - CVE-2025-26803
Published: February 27, 2025
Vulnerability identifier: #VU104968
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-26803
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Phusion B.V.
Affected software:
Phusion Passenger
Phusion Passenger
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when parsing HTTP requests with invalid HTTP method. A remote attacker can send a specially crafted HTTP request to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2025-26803
Install updates from vendor's website.