TI-2026-19881 Aliases CVE-2026-24656 GHSA-jmw5-58c7-587h

Apache Karaf: Decanter log-socket collector has deserialization vulnerability

LOW 19CWE-502Published 2026-01-26 · Updated 2026-01-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Code execution
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00681 52nd percentileScored 2026-11-07

Fix Fixed Apache Karaf (Apache Software Foundation): 2.12.0org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket (Maven): 2.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache Karaf	before 2.12.0	2.12.0	Patch available	CNA
—	org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket (Maven)	before 2.12.0	2.12.0	Patch available	GHSA-jmw5-58c7-587h

Apache Karaf VendorApache Affected before 2.12.0 Fixed in 2.12.0 Patch available CNA
org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket (Maven) Vendor— Affected before 2.12.0 Fixed in 2.12.0 Patch available GHSA-jmw5-58c7-587h

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:karaf_decanter::::::::	before 2.12.0	Vulnerable	Apache

cpe:2.3:a:apache:karaf_decanter:*:*:*:*:*:*:*:* Versions before 2.12.0 Vulnerable ·Apache

Remediation

Fix · CNA Apache Karaf (Apache Software Foundation) Fixed in 2.12.0
Fix · GHSA-jmw5-58c7-587h org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket (Maven) Fixed in 2.12.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-24656
2026-10-03 Alias added: GHSA-jmw5-58c7-587h

References

Advisory 3

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences