CVE-2026-42581

high Red Hat
CVSS v3 Base Score
7.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: May 13, 2026 (57 days ago)
Last Modified: May 13, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Netty's HttpObjectDecoder. A remote attacker can exploit this by sending a specially crafted HTTP/1.0 request that includes both `Transfer-Encoding: chunked` and `Content-Length` headers. While Netty correctly strips the conflicting `Content-Length` header for HTTP/1.1 messages, this guard is absent for HTTP/1.0. This can lead to HTTP request smuggling, where downstream proxies or handlers may misinterpret message boundaries, potentially allowing an attacker to bypass security controls or access unauthorized information.

CWE

CWE-444

Affected Products

Cryostat 4OpenShift ServerlessRed Hat AMQ Broker 7Red Hat AMQ ClientsRed Hat build of Apache Camel 4 for Quarkus 3Red Hat build of Apache Camel for Spring Boot 4Red Hat build of Apicurio Registry 2Red Hat build of Apicurio Registry 3Red Hat build of Debezium 3Red Hat Build of Keycloak

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com