PT-2025-7771 · Phusion · Phusion Passenger

Camden Narzt + 1 · Published 2025-02-24 · Updated 2025-03-02 · CVE-2025-26803

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Phusion Passenger versions 6.0.21 through 6.0.25

Description The issue allows for a denial of service during parsing of a request with an invalid HTTP method, specifically affecting the http parser.

Recommendations For versions 6.0.21 through 6.0.25, update to version 6.0.26 or later to resolve the issue.

Exploit

Fix

DoS

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

BIT-PASSENGER-2025-26803

BIT-PASSENGER-APACHE-MODULE-2025-26803

BIT-PASSENGER-NGINX-MODULE-2025-26803

CVE-2025-26803

GHSA-2CJ2-QQXJ-5M3R

Affected Products

Phusion Passenger

References · 22

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2025-26803.yml · Exploit
• https://github.com/phusion/passenger/compare/release-6.0.25...release-6.0.26 · Patch
• https://github.com/phusion/passenger/releases/tag/release-6.0.26 · Patch
• https://github.com/phusion/passenger/commit/bb15591646687064ab2d578d5f9660b2a4168017 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-26803 · Vendor Advisory
• https://blog.phusion.nl/2025/02/19/passenger-6-0-26 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-passenger-apache-module-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-passenger-nginx-module-2025-26803 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-passenger-2025-26803 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-2cj2-qqxj-5m3r · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-26803 · Security Note