Severity: important 

Affected versions:

- Apache Camel (org.apache.camel:camel-consul) 3.0.0 before 4.14.6
- Apache Camel (org.apache.camel:camel-consul) 4.15.0 before 4.18.1

Description:

The ConsulRegistry in the camel-consul component (class 
org.apache.camel.component.consul.ConsulRegistry and its inner 
ConsulRegistryUtils.deserialize method) read Java-serialized values from the 
Consul KV store and passed them to ObjectInputStream.readObject() without 
configuring an ObjectInputFilter. An attacker who can write to the Consul KV 
store backing a Camel ConsulRegistry instance could inject a malicious 
serialized Java object that is deserialized the next time Camel performs a 
lookup against that registry, leading to arbitrary code execution in the Camel 
process. The issue mirrors the class of vulnerability already addressed for 
other Camel components in CVE-2024-22369, CVE-2024-23114 and CVE-2026-25747, 
and was overlooked during the original remediation of those CVEs.

This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 
4.18.1.

Users are recommended to upgrade to version 4.19.0, 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 4.18.1.

This issue is being tracked as CAMEL-23029 

Credit:

Andrea Cosentino from Apache Software Foundation (finder)
Andrea Cosentino from Apache Software Foundation (remediation developer)

References:

https://camel.apache.org/security/CVE-2026-27172.html
https://camel.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-27172
https://issues.apache.org/jira/browse/CAMEL-23029

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