Input validation error in Apache Camel - CVE-2026-49098
Published: August 24, 2026
Vulnerability identifier: #VU144690
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49098
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect Kafka messages to an arbitrary topic.
The vulnerability exists due to improper input validation in the Camel Kafka component header handling when processing HTTP headers in a route that bridges an HTTP consumer to a kafka producer. A remote attacker can send a specially crafted HTTP request with a kafka.OVERRIDE_TOPIC header to redirect Kafka messages to an arbitrary topic.
The issue occurs because non-Camel-prefixed kafka.* exchange header names can pass through the upstream HTTP header filter unmodified.
Affected software
Apache Camel
How to mitigate CVE-2026-49098
Install security update from vendor's website.
Apache Camel - addressed in versions 4.15.0, 4.19.0, 4.21.0