Unsafe Deserialization in camel-infinispan ProtoStream Enables RCE

Executive Summary

CVE-2026-6857 is a high-severity vulnerability in the camel-infinispan component caused by unsafe deserialization in the ProtoStream remote aggregation repository.

Specifically, the method DefaultExchangeHolderUtils.deserialize() uses ClassLoadingAwareObjectInputStream.readObject() without applying an ObjectInputFilter, which means untrusted data can be deserialized without restriction.

A remote attacker with low privileges can exploit this by sending specially crafted data, leading to arbitrary code execution on the affected system.

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Detection Guidance

This vulnerability involves unsafe deserialization in the ProtoStream remote aggregation repository of camel-infinispan, specifically in the method DefaultExchangeHolderUtils.deserialize() using ClassLoadingAwareObjectInputStream.readObject() without an ObjectInputFilter.

Detection would typically involve monitoring for suspicious or unexpected deserialization activity or anomalous network traffic targeting the ProtoStream remote aggregation repository interfaces.

However, no specific detection commands or signatures are provided in the available resources.

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Impact Analysis

This vulnerability allows an attacker to execute arbitrary code remotely on the affected system.

As a result, the attacker can gain full control over the system, which compromises its confidentiality, integrity, and availability.

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Compliance Impact

This vulnerability allows a remote attacker to execute arbitrary code, leading to full control over the affected system. Such a compromise impacts the confidentiality, integrity, and availability of data and systems.

Because of this, organizations using the affected software may face challenges in maintaining compliance with standards and regulations like GDPR and HIPAA, which require protection of sensitive data and system integrity.

Exploitation of this vulnerability could result in unauthorized access to personal or protected health information, potentially leading to data breaches and regulatory violations.

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Mitigation Strategies

The vulnerability is caused by unsafe deserialization in the ProtoStream remote aggregation repository, specifically in the method DefaultExchangeHolderUtils.deserialize() which uses ClassLoadingAwareObjectInputStream.readObject() without applying an ObjectInputFilter.

To mitigate this vulnerability, immediate steps would typically include applying patches or updates provided by the vendor that address this unsafe deserialization issue.

Since the vulnerability has been verified on Apache Camel version 4.10.0 combined with Infinispan version 15.1.4, upgrading to a fixed version or applying security patches for these components is recommended.

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