CVE-2026-93579

MEDIUMCVSS 6.5/10

Last modified

CVE-2026-93579 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation.

Description

A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary, they can be exploited for request smuggling, header injection, or response splitting. This could lead to unauthorized access, data manipulation, or other security bypasses.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat AMQ Broker 7All versions
Red HatRed Hat build of Apache Camel 4 for Quarkus 3All versions
Red HatRed Hat build of Apache Camel for Spring Boot 4All versions
Red HatRed Hat build of Apicurio Registry 3All versions
Red HatRed Hat build of Debezium 3All versions
Red HatRed Hat Build of KeycloakAll versions
Red HatRed Hat build of QuarkusAll versions
Red HatRed Hat Data Grid 8All versions
Red HatRed Hat Fuse 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 7All versions
Red HatRed Hat JBoss Enterprise Application Platform 8All versions
Red HatRed Hat Single Sign-On 7All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-93579?
A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary, they can be exploited for request smuggling, header injection, or response splitting. This could lead to unauthorized access, data manipulation, or other security bypasses.
How severe is CVE-2026-93579?
CVE-2026-93579 has a CVSS score of 6.5/10 (MEDIUM severity).
How do I fix CVE-2026-93579?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST