Overly permissive cross-domain whitelist in Apache Camel - CVE-2026-84176
Published: October 23, 2026
Vulnerability identifier: #VU157293
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84176
CWE-ID: CWE-942
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information by reading credentialed cross-origin responses from a Camel endpoint.
The vulnerability exists due to a permissive cross-domain policy with untrusted domains in the Apache Camel Platform HTTP Vertx createCorsHandler() function when handling requests carrying an Origin header. A remote attacker can trick a victim into visiting a malicious page that sends credentialed cross-origin requests to read sensitive responses because the handler reflects arbitrary origins in Access-Control-Allow-Origin while also sending Access-Control-Allow-Credentials: true.
Affected software
Apache Camel
How to mitigate CVE-2026-84176
Install security update from vendor's website.
Apache Camel - addressed in versions 4.18.5, 4.22.1