Improper Neutralization of Special Elements used in an Expression Language Statement in Apache Camel - CVE-2026-83531
Published: October 23, 2026
Vulnerability identifier: #VU157292
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-83531
CWE-ID: CWE-917
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code with the privileges of the Camel process.
The vulnerability exists due to improper neutralization of expression language statements in the Apache Camel dynamic-router-control endpoint when processing subscription or update control messages containing predicate expressions and expression language names. A remote user can send a crafted control message through a transport whose route forwards messages to this endpoint, causing a supplied expression to be compiled without a language allow-list and evaluated against routed exchanges to execute arbitrary code.
Affected software
Apache Camel
How to mitigate CVE-2026-83531
Install security update from vendor's website.
Apache Camel - addressed in versions 4.18.5, 4.22.1, 4.23.0