CVE-2026-49432 Details
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.
A denial-of-service vulnerability has been identified in Apache ActiveMQ, including the 'All' and 'Stomp' variants, affecting versions prior to 5.19.8 and in the 6.0.0 series prior to 6.2.7. The issue arises from improper input validation, allowing a remote unauthenticated peer to send a negative content-length to an exposed STOMP connector. In the NIO STOMP transport, this can lead to out-of-memory conditions by exceeding the per-connection command buffer limits. For the blocking STOMP protocol, the error triggers abnormal exception handling and closure of the affected connection.
Users are advised to upgrade to Apache ActiveMQ version 6.2.7 or 5.19.8, both of which address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 30, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/06/29/7 | CVE | Third Party Advisory |
| https://lists.apache.org/thread/fsjb26605syqr8xks249h8gkp86t55d2 | [email protected] | Vendor AdvisoryMailing List |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache activemq | < 5.19.8 >= 6.0.0, < 6.2.7 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 2, 2026 | Initial Analysis | [email protected] |
| Jun 30, 2026 | CVE Modified | CISA-ADP |
| Jun 30, 2026 | CVE Modified | CVE |
| Jun 30, 2026 | New CVE Received | [email protected] |