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CVE-2025-26803

Quick assessment

Affected
Phusion Passenger
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Phusion Passenger是Phusion开源的一个快速而强大的 Web 服务器和应用程序服务器。 Phusion Passenger 6.0.21版本至6.0.25版本存在安全漏洞，该漏洞源于HTTP解析器解析无效HTTP方法时导致拒绝服务。

CVSS 5.3 · Medium EPSS 0.60% · P46
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I. Basic Information for CVE-2025-26803

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对未经初始化资源的使用
Source: CVE Program / CVE List V5
Vulnerability Title
Phusion Passenger 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Phusion Passenger是Phusion开源的一个快速而强大的 Web 服务器和应用程序服务器。 Phusion Passenger 6.0.21版本至6.0.25版本存在安全漏洞，该漏洞源于HTTP解析器解析无效HTTP方法时导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Phusion Passenger 6.0.21 ~ 6.0.26 -

II. Public POCs for CVE-2025-26803

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III. Intelligence Information for CVE-2025-26803

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Patches & Fixes for CVE-2025-26803 (3)

Security Blog Posts for CVE-2025-26803 (1)

Other References for CVE-2025-26803 (1)

IV. Related Vulnerabilities

Same weakness: CWE-908

V. Comments for CVE-2025-26803

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