Deserialization of Untrusted Data in Apache Camel - CVE-2026-78162
Published: October 23, 2026
Vulnerability identifier: #VU157281
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78162
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to deserialization of untrusted data without a Java deserialization filter in Camel-managed Hazelcast instances when processing serialized objects from an attached Hazelcast cluster. A remote attacker can publish a malicious serialized Java object into that cluster to execute arbitrary code within the affected instance before Camel processes the exchange.
The affected configuration paths are ReplicatedHazelcastAggregationRepository without a supplied hazelcastInstance, and client-mode endpoints without either a referenced ClientConfig or hazelcastConfigUri.
Affected software
Apache Camel
How to mitigate CVE-2026-78162
Install security update from vendor's website.
Apache Camel - addressed in versions 4.18.5, 4.22.1, 4.23.0