CVE-2026-93576: Red Hat Build Of Apache Camel For Spring Boot 4

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in Netty netty-codec-smtp. The component does not properly validate Carriage Return (CR) and Line Feed (LF) characters in the SMTP command-name field. A remote attacker, if an application routes untrusted input into this field, can embed CR/LF characters to inject arbitrary SMTP commands. This can lead to SMTP command smuggling, allowing for unauthorized email relay or spoofing of sender/recipient addresses. While the impact is significant, the real-world exploitability is considered lower as applications typically do not place user-controlled data in the command-name field.

Affected products

• Red Hat Red Hat Build Of Apache Camel For Spring Boot 4
• Red Hat Red Hat Fuse 7
• Red Hat Red Hat JBoss Enterprise Application Platform 7
• Red Hat Red Hat Single Sign-On 7

Published 2026-09-18. Last modified 2026-09-25.