CVE-2025-26803
First published: Mon Feb 24 2025(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/passenger | >=6.0.21<6.0.26 | 6.0.26 |
| Phusion Passenger | >=6.0.21<6.0.26 |
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Reference Links
- https://www.phusionpassenger.com/support
- https://github.com/phusion/passenger/compare/release-6.0.25...release-6.0.26
- https://github.com/phusion/passenger/releases/tag/release-6.0.26
- https://blog.phusion.nl/2025/02/19/passenger-6-0-26/
- https://github.com/phusion/passenger/commit/bb15591646687064ab2d578d5f9660b2a4168017
- https://nvd.nist.gov/vuln/detail/CVE-2025-26803
- https://blog.phusion.nl/2025/02/19/passenger-6-0-26
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2025-26803.yml
- https://github.com/advisories/GHSA-2cj2-qqxj-5m3r (Advisory)
Frequently Asked Questions
What is the severity of CVE-2025-26803?
CVE-2025-26803 is classified as a denial of service vulnerability.
How do I fix CVE-2025-26803?
To fix CVE-2025-26803, upgrade Phusion Passenger to version 6.0.26 or later.
What versions of Phusion Passenger are affected by CVE-2025-26803?
Phusion Passenger versions 6.0.21 through 6.0.25 are affected by CVE-2025-26803.
Can CVE-2025-26803 be exploited remotely?
Yes, CVE-2025-26803 can potentially be exploited remotely if the server processes a request with an invalid HTTP method.
What impact does CVE-2025-26803 have on applications?
CVE-2025-26803 can lead to a Denial of Service, causing the application to become unresponsive.
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