CVE-2026-78162 Apache Camel - Insecure Deserialization

Apache Camel 4.0.0 before 4.18.5, 4.19.0 before 4.22.1 contains an insecure deserialization vulnerability caused by missing JavaSerializationFilterConfig in certain Hazelcast configuration paths, letting attackers publishing to the Hazelcast cluster achieve remote code execution, exploit requires attacker to publish malicious serialized objects to the Hazelcast cluster.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
View the NVD record ↗

Details

Type
Insecure Deserialization
Impact
Remote Code Execution
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
19 October 2026
Updated
20 October 2026
Weakness
CWE-502

Vendor fix

Upgrade to Apache Camel version 4.23.0, or 4.22.1 for 4.22.x stream, or 4.18.5 for 4.18.x stream. Alternatively, apply explicit Hazelcast JavaSerializationFilterConfig or enable Hazelcast cluster authentication and TLS.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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