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CVE-2025-6442

Ruby WEBrick read_header HTTP Request Smuggling Vulnerability

Published: Jun 25, 2025Updated: Aug 18, 2025 Sources: CVE List NVD GHSA BDUCWE-444
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.4%
Top 66.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

Ruby WEBrick read_headers method can lead to HTTP Request/Response Smuggling

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-444

Affected Products

webrickRubyGemsOSS Libraries
webrickruby-lang
Library
OSS Libraries / generic-library
Red Hat 3scale API Management PlatformRed Hat Inc.
SaaSSaaS Service
Cloud & SaaS / api-gateway
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
rubygemspackage-ecosystemOSS Libraries
ruby-langoss-projectOSS Librariesaka ruby, rexml
red hat inc.commercialUSOperating Systemsaka red hat
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 8 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2025-6442
nvd.nist.gov
https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864
github.com
https://github.com/ruby/webrick
github.com
and 11 more references View all →

Timeline

Published
Jun 25, 2025
Last Updated
Aug 18, 2025

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