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6.5 Medium

CVE-2026-93579 Io.netty/netty-codec-http2: netty: http/2 header field values are not validated by default (cr/lf/nul passthrough)

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.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitable remotely over the network, without an account and without any user action; the impact on data or service is limited.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat AMQ Broker 7 Versions not published
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apache Camel for Spring Boot 4 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat build of Quarkus Versions not published
Red Hat Data Grid 8 Versions not published
Red Hat Fuse 7 Versions not published
Show the 8 other branches
Product Affected versions Fixed in
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat Single Sign-On 7 Versions not published
Red Hat build of Quarkus 3.27.5.SP2 Versions not published
Red Hat build of Quarkus 3.33.3.SP2 Versions not published
Red Hat Build of Debezium 3.6 Versions not published
Red Hat JBoss Enterprise Application Platform Expansion Pack Versions not published
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published

References

Timeline

  1. Published
  2. Last modified

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