Vulnerability in Phusion Passenger
CVE-2025-26803
The http parser in Phusion Passenger 6.0.21 through 6.0.25 before 6.0.26 allows a denial of service during parsing of a request with an invalid HTTP method.
EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Phusion Passenger — versions 6.0.21
Weakness classification (CWE)
References
- cve@mitre.org (Product)
- cve@mitre.org (Patch)
- cve@mitre.org (Patch)
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Patch)
Frequently asked questions
- What is CVE-2025-26803?
- CVE-2025-26803 is a medium-severity vulnerability in Phusion Passenger, classified under Use of Uninitialized Resource. CVSS score: 5.3/10. Published 2025-02-24.
- How severe is CVE-2025-26803?
- Medium severity. CVSS v3 base score is 5.3 out of 10.