HIGH

CVE-2026-49432

CVSS v3

7.5

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-10-17

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

activemqBitnamiall versions · fixed in 5.19.8

Vendor advisories

CVE-2026-49432 Red Hat Product Security2 products fixed · 121 known affected
org.apache.activemq/activemq: org.apache.activemq/activemq-all: org.apache.activemq/activemq-stomp: Apache ActiveMQ: Denial of Service via improper input validation in STOMP connector
activemq-artemis-native as a component of Red Hat AMQ Broker 7 · activemq-client as a component of Red Hat AMQ Broker 7 · activemq-openwire-legacy as a component of Red Hat AMQ Broker 7
RHSA-2026:66545 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update
RHSA-2026:66488 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update

Full record on NVD

Description

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. This issue affects 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; Apache ActiveMQ Stomp: 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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-06-30
Last Modified: 2026-06-30

Frequently asked questions

What is CVE-2026-49432?

Is CVE-2026-49432 actively exploited?

Active exploitation of CVE-2026-49432 has not been confirmed. Its EPSS score was 0.8% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-49432?

CVE-2026-49432 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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