High [CVE-2026-49434] Unauthorized broker instantiation via improper input validation in LDAP entries
This high-severity Red Hat Linux advisory covers CVE-2026-49434 affecting Red Hat AMQ Broker 7, Red Hat AMQ Clients, Red Hat build of Apache Camel for Spring Boot 4.
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Summary
Improper Input Validation vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. An attacker that has access to publish or modify entries in LDAP that match the configured searchBase and searchFilter can instantiate denied transports inside the broker JVM.
This can be used to fetch an attacker URL and spawn a second BrokerService inside the same JVM. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
An attacker with privileges to publish or modify entries in Lightweight Directory Access Protocol (LDAP) can exploit an improper input validation vulnerability. Red Hat products ship Apache ActiveMQ Classic components as transitive dependencies.
The vulnerability is in the LdapNetworkConnector feature specific to Classic ActiveMQ, which allows an attacker with LDAP write access to instantiate denied transports and spawn a rogue broker. This feature is not configured or used in any Red Hat product deployment.
Red Hat AMQ Broker is based on Apache ActiveMQ Artemis, a separate codebase that does not include the LdapNetworkConnector. Red Hat severity: Important — CVSS 7.6 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H).
Weakness: CWE-90.
Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat AMQ Clients; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Data Grid 8; and 7 more.
- < 5.19.8
- < 6.0.0
- < 6.2.7
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
- 6.2.7
- 5.19.8
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
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