Input validation error in Apache Camel - CVE-2026-40453
Published: August 25, 2026
Vulnerability identifier: #VU145338
CSH Severity: Medium
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40453
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code or write arbitrary files.
The vulnerability exists due to improper input validation in non-HTTP HeaderFilterStrategy implementations when processing broker messages with case-variant Camel internal headers. A remote user can inject crafted headers to execute arbitrary code or write arbitrary files.
Exploitation requires producer access to a JMS or equivalent broker consumed by a Camel route, and affects routes that forward messages to header-driven components such as camel-exec or camel-file.
Affected software
Apache Camel
Red Hat Camel for Spring Boot
Red Hat Camel for Spring Boot
How to mitigate CVE-2026-40453
Install security update from vendor's website.
Apache Camel - addressed in versions 4.14.6, 4.18.2, 4.20.0
Red Hat Camel for Spring Boot - update to 4.14
Red Hat Camel for Spring Boot - update to 4.14