CVE-2026-88900Hinoki check available

Code execution via unfiltered cluster-message deserialization

Published Oct 19, 2026 · Updated Oct 19, 2026

Unsafe deserialization in Apache Camel's JGroups consumer allows remote attackers to execute code through cluster messages. JGroupsEndpoint.createExchange(Message) obtains the body through Message.getObject(), after JGroups deserializes ObjectMessage payloads on its receive thread without a filter unless a JVM-wide filter is configured. Exploitation requires cluster multicast-group or bind-port access and a usable classpath gadget chain; the default UDP channel requires no credentials and normally limits reachability to an adjacent network.

CVSS severityUnavailable
Unscored
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 JGroups consumer allows remote attackers to execute code through cluster messages. JGroupsEndpoint.createExchange(Message) obtains the body through Message.getObject(), after JGroups deserializes ObjectMessage payloads on its receive thread without a filter unless a JVM-wide filter is configured. Exploitation requires cluster multicast-group or bind-port access and a usable classpath gadget chain; the default UDP channel requires no credentials and normally limits reachability to an adjacent network.

The record

CVE
CVE-2026-88900
Published
Oct 19, 2026
Updated
Oct 19, 2026
Vendor
Apache Software Foundation
Product
Apache Camel
Classifications
CWE-502, T1210
Attack vector
adjacent
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 vectoradjacent
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

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