🛡️ CVE-2026-49270 — activemq

🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-1230 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have an Exposure of Sensitive Information Through Metadata vulnerability

Exposure of Sensitive Information Through Metadata vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.

Brokers that are configured with a network connector with syncDurableSubs set to true, are vulnerable to an unauthenticated attacker who can receive a list of all durable topic subscriptions in the broker, including client identifiers, subscription names, topic destinations, and JMS selector expressions, by sending a BrokerInfo command. The broker incorrectly responds without first ensuring the connection is authenticated.

This issue affects Apache ActiveMQ Broker: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6.

Users are recommended to upgrade to version 6.2.6 or 5.19.7, which fixes the issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Affected software

CVE-2026-49270 is recorded against 5 packages.

  • activemq
  • activemq-broker (from 6.0.0 up to 6.2.6)
  • org.apache.activemq:activemq-all (from 6.0.0 up to 6.2.6)
  • org.apache.activemq:activemq-broker (from 6.0.0 up to 6.2.6)
  • org.apache.activemq:apache-activemq (from 6.0.0 up to 6.2.6)

Timeline and source

Published on 5 June 2026 and last revised on 22 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

www.openwall.com (Web)
lists.apache.org (Web)
nvd.nist.gov (Web)

CVE-2026-49270 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-1230
Public Exploit ✅ No
Source NVD
Published 2026-06-05
Updated 2026-08-12
Modified 2026-07-22
Fix URL N/A

Affected Packages

Software From version Fixed in
activemq — —
activemq-broker 6.0.0 6.2.6
org.apache.activemq:activemq-all 6.0.0 6.2.6
org.apache.activemq:activemq-broker 6.0.0 6.2.6
org.apache.activemq:apache-activemq 6.0.0 6.2.6

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