#VU114416 Inconsistent interpretation of HTTP requests in WEBrick - CVE-2025-6442

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Main Vulnerability Database Vulnerabilities #VU114416

#VU114416 Inconsistent interpretation of HTTP requests in WEBrick - CVE-2025-6442

Published: August 25, 2025


Vulnerability identifier: #VU114416
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-6442
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
WEBrick
Software vendor:
Ruby

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests within the read_header() method. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.


Remediation

Install updates from vendor's website.

External links