Deserialization Vulnerability in Apache Camel JMS Component
CVE-2026-43866

7.3HIGH

Key Information:

Vendor

Apache
Status
Apache Camel
Vendor
CVE Published:
6 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-43866?

A deserialization vulnerability exists in the Apache Camel JMS component where the JmsBinding.extractBodyFromJms() method can integrate untrusted data if the mapJmsMessage option is enabled, allowing attackers to publish arbitrary messages. This flaw permits precise manipulation of routing, headers, exchange properties, and error handling without requiring complex deserialization chains. Upgrading to version 4.21.0 or later is highly recommended, with careful management of ObjectMessage consumption to ensure security.

Affected Version(s)

Apache Camel 3.0.0 < 4.14.8

Apache Camel 4.15.0 < 4.18.3

Apache Camel 4.19.0 < 4.21.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-43866
Created by oscerd

References

https://camel.apache.org/security/CVE-2026-43866.html
vendor-advisory

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

gaorenyusi
Andrea Cosentino
.