Input validation error in Apache Camel - CVE-2026-71300
Published: August 25, 2026
Vulnerability identifier: #VU145149
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-71300
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to interfere with WebSocket message delivery.
The vulnerability exists due to improper input validation in the camel-atmosphere-websocket producer when handling HTTP requests bridged into an atmosphere-websocket route. A remote attacker can supply crafted websocket dispatch headers to influence recipient selection and interfere with WebSocket message delivery.
An ordinary inbound HTTP header is sufficient to reach the list-valued dispatch branch, and a message intended for one connected client may be suppressed or redirected to a different client whose connection key is known.
Affected software
Apache Camel
How to mitigate CVE-2026-71300
Install security update from vendor's website.
Apache Camel - addressed in versions 4.14.9, 4.18.4, 4.22.0