**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 port 4560 without authentication. If the collector exposes the allowed classes property, this configuration can be bypassed. This means the log socket collector is vulnerable to deserialization of untrusted data, potentially leading to a Denial of Service (DoS). - NB: The Decanter log socket collector is not installed by default. Users who have not installed the Decanter log socket collector are not affected by this issue. **Solution:** - This issue affects Apache Karaf Decanter versions prior to 2.12.0. - Users are advised to upgrade to version 2.12.0, which resolves the vulnerability. - This issue is being tracked at 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