CVE-2026-49434

EUVD-2026-40285

30.06.2026, 11:16

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.
This issue affects Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7.

Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 38.33%

Affected Products (NVD)

Vendor	Product	Version
apache	activemq	𝑥 < 5.19.8
apache	activemq	6.0.0 ≤ 𝑥 < 6.2.7
apache	activemq_broker	𝑥 < 5.19.8
apache	activemq_broker	6.0.0 ≤ 𝑥 < 6.2.7

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

activemq

bookworm	vulnerable
bookworm (security)	vulnerable
bullseye	vulnerable
bullseye (security)	vulnerable
sid	vulnerable
trixie	vulnerable

Ubuntu Releases

Ubuntu Product

Codename

activemq

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	needs-triage
questing	ignored
resolute	needs-triage

Common Weakness Enumeration

CWE-20 - Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References

https://lists.apache.org/thread/hcjh7kdk4l85tb9ksmvcnkhso1ngj50o

http://www.openwall.com/lists/oss-security/2026/06/29/8