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    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.

    Published:Feb 24, 2025
    Last Modified:Jul 13, 2025
    EPS:Feb 24, 2025
    EPSS Score:0.00531
    CVSS Score:5.3

    Affected Products

    Vendor
    Phusion
    Product
    Passenger

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-908 Use of Uninitialized Resource

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2018-12027 (CVSS 8.8) — An Insecure Permissions vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 causes informatio…
    CVE-2018-12028 (CVSS 7.8) — An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Pass…
    CVE-2018-12029 (CVSS 7) — A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation…
    CVE-2018-12615 (CVSS 5.3) — An issue was discovered in switchGroup() in agent/ExecHelper/ExecHelperMain.cpp in Phusion Passenger before 5.…
    CVE-2017-16355 (CVSS 4.7) — In agent/Core/SpawningKit/Spawner.h in Phusion Passenger 5.1.10 (fixed in Passenger Open Source 5.1.11 and Pas…
    CVE-2016-10345 (CVSS 7.8) — In Phusion Passenger before 5.1.0, a known /tmp filename was used during passenger-install-nginx-module execut…
    CVE-2014-1832 (CVSS 2.1) — Phusion Passenger 4.0.37 allows local users to write to certain files and directories via a symlink attack on …
    CVE-2014-1831 (CVSS 2.1) — Phusion Passenger before 4.0.37 allows local users to write to certain files and directories via a symlink att…
    CVE-2013-4136 (CVSS 4.4) — ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privi…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High