CVE-2026-40473

HIGH LAB

Apache Camel Mina: Unsafe Deserialization in MinaConverter.toObjectInput() via TCP/UDP

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2026-40473. PoCs published by oscerd, dinosn.

AI-analyzed exploit summary This repository provides a functional proof-of-concept for CVE-2026-40473, a Java deserialization vulnerability in Apache Camel's camel-mina component. The exploit sends a crafted serialized object via TCP to trigger remote code execution when the victim route deserializes the input without proper filtering.

Description

The camel-mina component's MinaConverter.toObjectInput(IoBuffer) type converter wraps an IoBuffer in a java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. When a Camel route uses camel-mina as a TCP or UDP consumer and requests conversion to ObjectInput (for example via getBody(ObjectInput.class) or @Body ObjectInput), an attacker sending a crafted serialized Java object over the network to the MINA consumer port can trigger arbitrary code execution in the context of the application during readObject(). This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0. Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2.

Exploits (3)

github WORKING POC
by oscerd · javapoc
https://github.com/oscerd/CVE-2026-40473

This repository provides a functional proof-of-concept for CVE-2026-40473, a Java deserialization vulnerability in Apache Camel's camel-mina component. The exploit sends a crafted serialized object via TCP to trigger remote code execution when the victim route deserializes the input without proper filtering.

Classification
Working Poc 98%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Apache Camel camel-mina component versions before 4.14.6, 4.18.2, and 4.20.0
No auth needed
Prerequisites: Apache Camel with camel-mina component (vulnerable versions) · A route configured to convert TCP/UDP input to ObjectInput and call readObject() · Gadget chain (e.g., CommonsCollections) on the classpath
mistral-large-3 · analyzed Jul 09, 2026 Full analysis →
github WORKING POC
by dinosn · pythonpoc
https://github.com/dinosn/CVE-2026-33453

The repository contains functional exploit code for CVE-2026-40473, demonstrating an unsafe deserialization vulnerability in Apache Camel's camel-mina component. The exploit leverages a raw TCP endpoint with disabled codecs to bypass MINA's filtering and achieve remote code execution via a CommonsCollections6 gadget chain.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Apache Camel 4.18.0
No auth needed
Prerequisites: Docker · Python 3.8+ · Java 17+ · ysoserial
mistral-large-3 · analyzed May 17, 2026 Full analysis →
github WORKING POC
by dinosn · pythonpoc
https://github.com/dinosn/apache-camel

The repository contains functional exploit code for CVE-2026-40473, demonstrating an unsafe deserialization vulnerability in Apache Camel's MINA component. The exploit leverages a raw TCP endpoint with disabled codecs to bypass filtering and achieve remote code execution via a CommonsCollections6 gadget chain.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Apache Camel 4.18.0
No auth needed
Prerequisites: Docker · Python 3.8+ · Java 17+ · ysoserial
mistral-large-3 · analyzed Apr 28, 2026 Full analysis →

Scores

CVSS v3 8.8
EPSS 0.0087
EPSS Percentile 55.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Lab Environment

COMMUNITY
Community Lab
docker pull eclipse-temurin:17-jre
docker pull infinispan/server:15.0
docker pull eclipse-temurin:21-jre

Details

CWE
CWE-502
Status published
Products (6)
apache/camel 4.19.0
apache/camel 3.0.0 - 4.14.6
Apache Software Foundation/Apache Camel Mina 3.0.0 - 4.14.6
Apache Software Foundation/Apache Camel Mina 4.15.0 - 4.18.2
Apache Software Foundation/Apache Camel Mina 4.19.0 - 4.20.0
org.apache.camel/camel-mina 3.0.0 - 4.14.6Maven
Published Apr 27, 2026
Tracked Since Apr 27, 2026