CVE-2026-78162Public exploitNetwork attack vectorHinoki check available

Code execution via missing Java deserialization filters

Published Oct 19, 2026 · Updated Oct 19, 2026

Unsafe deserialization in Apache Camel's camel-hazelcast component allows remote attackers to execute code via cluster-published objects. ReplicatedHazelcastAggregationRepository.doStart() and HazelcastDefaultComponent.getOrCreateHzClientInstance() omit class filters when constructing their own Hazelcast configurations, allowing unrestricted object deserialization before exchange processing. Exploitation requires publishing access to the attached cluster, which lacks authentication and TLS by default; the affected paths use Camel-built instances rather than explicitly supplied configurations.

CVSS severity10.0
Critical
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Unsafe deserialization in Apache Camel's camel-hazelcast component allows remote attackers to execute code via cluster-published objects. ReplicatedHazelcastAggregationRepository.doStart() and HazelcastDefaultComponent.getOrCreateHzClientInstance() omit class filters when constructing their own Hazelcast configurations, allowing unrestricted object deserialization before exchange processing. Exploitation requires publishing access to the attached cluster, which lacks authentication and TLS by default; the affected paths use Camel-built instances rather than explicitly supplied configurations.

The record

CVE
CVE-2026-78162
Published
Oct 19, 2026
Updated
Oct 19, 2026
Vendor
The Apache Software Foundation
Product
Apache Camel
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0.0 <4.18.5
  2. Affected versionversion=4.19.0 <4.22.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Camelversion=4.0.0 <4.18.5; version=4.19.0 <4.22.1

Published CVSS scores

10.0Apache Software FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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