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CVE-2026-78162— Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)

Quick assessment

Affected
Apache Software Foundation Apache Camel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Camel 中存在不可信数据反序列化漏洞。 受影响版本范围： Apache Camel 4.0.0 至 4.18.5（不含 4.18.5） Apache Camel 4.19.0 至 4.22.1（不含 4.22.1） 漏洞详情： 组件会为其自身配置创建的实例应用默认的 ，该防护机制由 CVE-2026-43865 引入。然而，这一变更未覆盖到 Camel 自身构建的两个配置路径，导致这些路径创建的 Hazelcast 实例仍允许无限制的反序列化操作。 具体而言： 1. 继承自 ，但其重写了 方法且未

CVSS 10.0 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-78162

Vulnerability Information
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Vulnerability Title
Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
Source: CVE Program / CVE List V5
Vulnerability Description
Deserialization of Untrusted Data vulnerability in Apache Camel. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The camel-hazelcast component applies a default Hazelcast JavaSerializationFilterConfig to the instances it creates from its own configuration, a protection introduced by CVE-2026-43865. That change did not reach two of the configuration paths Camel builds itself, so those paths continued to create Hazelcast instances whose Java deserialization is unrestricted. ReplicatedHazelcastAggregationRepository extends HazelcastAggregationRepository but overrides doStart() without calling super.doStart(), keeping its own copy of the bootstrap block, and therefore never received the filter: a route using it without supplying a hazelcastInstance starts a Hazelcast member that deserializes values read from the backing ReplicatedMap with no class restriction. HazelcastDefaultComponent#getOrCreateHzClientInstance() builds its own ClientConfig when hazelcastMode=client is selected and neither a referenced ClientConfig nor hazelcastConfigUri is supplied, and likewise applied no filter, so client-mode endpoints behaved differently from node-mode endpoints for an otherwise identical configuration. In both cases an attacker able to publish into the Hazelcast cluster that the affected instance is attached to can cause a serialized Java object of their choosing to be deserialized inside Hazelcast's own serialization layer, before Camel processes the exchange, resulting in remote code execution. Hazelcast clusters have neither authentication nor TLS enabled by default. Selecting client mode is a topology choice rather than a security option, so neither path required the deployment to opt in to unsafe behaviour. Users are recommended to upgrade to version 4.23.0, which fixes the issue. If users are on the 4.22.x releases stream, then they are suggested to upgrade to 4.22.1. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.5. The 4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. For deployments that cannot upgrade immediately, supply an explicit Hazelcast configuration carrying a JavaSerializationFilterConfig, or inject a pre-built HazelcastInstance, since a user-supplied configuration is never overwritten by Camel. Alternatively set the JVM-wide filter -Djdk.serialFilter=!java.net.;java.;javax.;org.apache.camel.;!* and enable Hazelcast cluster authentication and TLS to restrict who can reach the cluster.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Camel 4.0.0 ~ 4.18.5 -

II. Public POCs for CVE-2026-78162

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III. Intelligence Information for CVE-2026-78162

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Vendor Advisories for CVE-2026-78162 (1)

Other References for CVE-2026-78162 (7)

Same Patch Batch · Apache Software Foundation · 2026-10-19 · 62 CVEs total

CVE-2026-88900 8.8 HIGH Apache Camel: Camel-JGroups: Unsafe Java Deserialization of Cluster Messages in the JGroup
CVE-2026-83531 8.8 HIGH Apache Camel: Camel-Dynamic-Router Control Endpoint Compiles Predicate Expressions Supplie
CVE-2026-78165 8.8 HIGH Apache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
CVE-2026-80343 8.2 HIGH Apache Camel: Camel-Netty-HTTP Security Constraint Bypass via Case-Sensitive Context-Path
CVE-2026-80344 8.2 HIGH Apache Camel: Camel-AS2 Server-Side Request Forgery and Credential Disclosure via Asynchro
CVE-2026-80312 8.2 HIGH Apache Camel: Camel-OAuth Authentication Bypass via Fail-Open Processors
CVE-2026-78164 8.2 HIGH Apache Camel: HTTP producers resolve property placeholders in message-supplied URI overrid
CVE-2026-88901 8.2 HIGH Apache Camel: Camel-Smooks XML External Entity Processing, external entities resolved by d
CVE-2026-85250 7.5 HIGH Apache Camel: Camel-XPath XML External Entity Processing and File Disclosure via the docum
CVE-2026-85251 7.5 HIGH Apache Camel: Camel-HTTP Credential Disclosure to Cross-Host Redirect Targets
CVE-2026-79984 7.4 HIGH Apache Camel: camel-mina-sftp resolved the remote path of a polled file from the name repo
CVE-2026-79985 7.4 HIGH Apache Camel: camel-smb resolved the remote path of a polled file from the name reported i
CVE-2026-79986 7.4 HIGH Apache Camel: camel-azure-files resolved the remote path of a polled file from the name re
CVE-2026-79983 7.4 HIGH Apache Camel: camel-ftp resolved the remote path of a polled file from the name reported i
CVE-2026-91858 6.5 MEDIUM Apache Camel: Camel-FOP Resolves External DTDs and Entities From Untrusted XSL-FO Input Wh
CVE-2026-84176 6.5 MEDIUM Apache Camel: Camel-Platform-HTTP-Vertx Cross-Origin Credential Exposure via Wildcard Orig
CVE-2026-85249 6.5 MEDIUM Apache Camel: Camel-Tika Header Injection via Unfiltered Document Metadata
CVE-2026-85254 6.5 MEDIUM Apache Camel: Camel-Platform-HTTP Request-Header Echo Suppression Bypassed by Header-Name
CVE-2026-85314 6.5 MEDIUM Apache Camel: Camel-Mail Header Injection via Unfiltered mail.smtp Headers in the MimeMult
CVE-2026-85296 6.5 MEDIUM Apache Camel: Camel-AS2 Cross-Partner Signing Key Confusion via Shared Per-Request State

Showing top 20 of 62 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Apache Camel
Same vendor: Apache Software Foundation
Same weakness: CWE-502

V. Comments for CVE-2026-78162

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