Apache ActiveMQ < 5.19.8 / 6.x < 6.2.7 Multiple Vulnerabilities

high Nessus Plugin ID 324953

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Synopsis

The remote host is running a web application that is affected by multiple vulnerabilities.

Description

The version of Apache ActiveMQ running on the remote host is prior to 5.19.8 or 6.x prior to 6.2.7. It is, therefore, affected by multiple vulnerabilities:

- Improper Input Validation vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. A remote unauthenticated peer that can reach an exposed STOMP connector can trigger denial-of-service behavior by sending a negative content-length. For the NIO STOMP transport, an attacker can keep streaming body bytes and grow the per-connection command buffer beyond configured limits to cause OOM. For the blocking STOMP protocol, an error will instead force abnormal transport exception handling for the affected connection and closure. (CVE-2026-49432)

- Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All. An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validated and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker. (CVE-2026-50734)

- Improper Authorization vulnerability in Apache ActiveMQ. An authenticated low-privilege Web Console user by default can access /admin/* paths in the Web Console. The default Jetty settings incorrectly did not limit those paths to only admins. (CVE-2026-49877)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Apache ActiveMQ version 5.19.8, 6.2.7, or later.

Plugin Details

Severity: High

ID: 324953

File Name: activemq_6_2_7.nasl

Version: 1.2

Type: Combined

Agent: unix

Family: CGI abuses

Published: 7/3/2026

Updated: 7/6/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

CVSS Score Source: CVE-2026-49877

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:activemq

Required KB Items: installed_sw/Apache ActiveMQ

Exploit Ease: No known exploits are available

Patch Publication Date: 6/29/2026

Vulnerability Publication Date: 6/29/2026

Reference Information

CVE: CVE-2026-49432, CVE-2026-49434, CVE-2026-49877, CVE-2026-50734, CVE-2026-52760, CVE-2026-53916, CVE-2026-53917, CVE-2026-54475

IAVA: 2026-B-0181

Detections

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