Bug 2555498 (CVE-2026-85245)

Summary: CVE-2026-85245 org.apache.camel/camel-thrift: Apache Camel Thrift: Information disclosure via shared object reuse
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: gmalinko, janstey, pdelbell, rstepani
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Hardware: All   
OS: Linux   
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A flaw was found in the Apache Camel Thrift component, which can lead to information disclosure. When processing incoming messages, the component unmarshals data into a shared process-wide object rather than creating a fresh instance for each exchange. Consequently, data from earlier or concurrent transactions remains accessible, allowing an attacker to observe sensitive information belonging to other users or tenants sharing the same route.
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Description OSIDB Bzimport 2026-10-19 10:44:35 UTC 
Exposure of Data Element to Wrong Session vulnerability in Apache Camel Thrift component.



This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1.

The Thrift data format unmarshalled incoming data into the shared defaultInstance of the target type rather than into a fresh copy, and returned that shared object as the exchange body. Because the instance is shared process-wide, state written while unmarshalling one message stayed on the object and was visible to every later message that used the same type. Fields absent from a later payload retained the previous message's values, so content belonging to one sender could be read while processing another sender's message, and concurrent exchanges could observe each other's partially written state. In a deployment that serves more than one tenant or user through the same route, that is disclosure of one party's data to another.

Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. Unmarshalling now deserializes into a copy, so each exchange gets its own instance and no state carries between messages. For deployments that cannot upgrade immediately, copy the unmarshalled body into a new instance immediately after the data format runs, and do not retain references to the returned object.