Review reviewHigh

CVE-2026-43865

Apache Software Foundation Apache Camel, camel

Deserialization of Untrusted Data vulnerability in Apache Camel Hazelcast component. The camel-hazelcast component creates and manages Hazelcast instances using a default configuration that applies no Java deserialization filter. When Camel builds the Hazelcast Config itself - that is, when no user-supplied HazelcastInstance, hazelcastConfigUri, or referenced Config bean is provided - neither Hazelcast's JavaSerializationFilterConfig nor a Camel-side ObjectInputFilter is configured, so objects received over the Hazelcast cluster protocol are deserialized inside Hazelcast's own serialization...

CVSS: 8.1
EPSS: 0.97%
CISA KEV: Not listed
Published: 2026.07.06

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.97%

Technical severityCVSS 8.1

Vulnerability overview

Affected product and versions

Product: Apache Software Foundation Apache Camel, camel
Affected versions: 4.0.0, 4.15.0, 4.19.0, >= 4.0.0 < 4.14.8, >= 4.15.0 < 4.18.3, >= 4.19.0 < 4.21.0
Fixed versions: 4.14.8, 4.18.3, 4.21.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Apache Software Foundation Apache Camel, camel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-502