What is GHSA-c86r-9hm3-5pcc?

GHSA-c86r-9hm3-5pcc is a security advisory published by GitHub Security Advisories with unknown severity. Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB. A user can...

Which CVE IDs does GHSA-c86r-9hm3-5pcc cover?

GHSA-c86r-9hm3-5pcc covers the following CVE IDs: CVE-2026-111821. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-c86r-9hm3-5pccunknown

Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB. A user can...

Vendor

GitHub Security Advisories

Published

November 4, 2026

Last Modified

November 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-111821 →

📋 Description

Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB.

A user can create a durable subscription with a clientId and subscription name that have a combined length > 65,535 (while separately being shorter) on a broker using KahaDB which can cause the broker to shutdown and be unrecoverable.

This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; Apache ActiveMQ KahaDB: from 6.0.0 before 6.3.3, before 5.19.12.

Users are recommended to upgrade to version 6.4.0, 6.3.3 or 5.19.12, which fixes the issue.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-111821
https://lists.apache.org/thread/p8gxq66lmztkrls74wkz3xh9chqd0pwl
http://www.openwall.com/lists/oss-security/2026/11/03/19
https://github.com/advisories/GHSA-c86r-9hm3-5pcc