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Message-ID: <ae8b2833-f721-d2b0-085c-682a0dee6eb6@apache.org>
Date: Sat, 24 Jan 2026 06:27:56 +0000
From: Jean-Baptiste Onofré <jbonofre@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-24656: Apache Karaf: Decanter log-socket collector has deserialization vulnerability
Severity: important
Affected versions:
- Apache Karaf (org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket) before 2.12.0
- Apache Karaf (org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket) 2.12.0 unaffected
Description:
Deserialization of Untrusted Data vulnerability in Apache Karaf Decanter.
The Decanter log socket collector exposes the port 4560, without authentication. If the collector exposes allowed classes property, this configuration can be bypassed.
It means that the log socket collector is vulnerable to deserialization of untrusted data, eventually causing DoS.
NB: Decanter log socket collector is not installed by default. Users who have not installed Decanter log socket are not impacted by this issue.
This issue affects Apache Karaf Decanter before 2.12.0.
Users are recommended to upgrade to version 2.12.0, which fixes the issue.
This issue is being tracked as https://github.com/apache/karaf-decanter/issues/555
Credit:
r00t4dm (finder)
References:
https://karaf.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-24656
https://issues.apache.org/jira/browse/https://github.com/apache/karaf-decanter/issues/555
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