VulnerabilityAnalyzed
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.
HIGH 7.5EPSS 0.60%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- phusion/passenger
- Source
- cve@mitre.org
References
- https://blog.phusion.nl/2025/02/19/passenger-6-0-26/Vendor Advisory
- https://github.com/phusion/passenger/commit/bb15591646687064ab2d578d5f9660b2a4168017Patch
- https://github.com/phusion/passenger/compare/release-6.0.25...release-6.0.26Patch
- https://github.com/phusion/passenger/releases/tag/release-6.0.26Patch
- https://www.phusionpassenger.com/supportProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.