CVE-2026-53916
published 2026-06-30CVE-2026-53916: Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. An unauthenticated client that opens…
PriorityP347high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.80%
52.2th percentile
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap.
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | activemq | < 5.19.8 | 5.19.8 |
| apache | activemq | >= 6.0.0 < 6.2.7 | 6.2.7 |
| apache_software_foundation | apache_activemq | < 5.19.8 | 5.19.8 |
| apache_software_foundation | apache_activemq | >= 6.0.0 < 6.2.7 | 6.2.7 |
| apache_software_foundation | apache_activemq_all | < 5.19.8 | 5.19.8 |
| apache_software_foundation | apache_activemq_all | >= 6.0.0 < 6.2.7 | 6.2.7 |
| apache_software_foundation | apache_activemq_stomp | < 5.19.8 | 5.19.8 |
| apache_software_foundation | apache_activemq_stomp | >= 6.0.0 < 6.2.7 | 6.2.7 |
| candlepinproject | candlepin | — | — |
| log4j_2 | log4j | — | — |
| satellite_el8 | candlepin | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
vendor_redhat·2026-06-30·CVSS 7.5
CVE-2026-53916 [HIGH] CWE-789 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
No description is available for this CVE.
Statement: Red Hat products ship Apache ActiveMQ Classic components as transitive dependencies. The vulnerability is in the Classic ActiveMQ STOMP NIO codec, which does not limit the size of header byte buffering, allowing an unauthenticated attacker to exhaust JVM heap memory. Apache ActiveMQ Artemis, which powers Red Hat AMQ Broker, has its own STOMP protocol implementation (artemis-stomp-protocol) that does not share this code path. The Classic STOMP NIO codec is not exposed in Red Hat product deployments.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Securit
VulDB
Apache ActiveMQ up to 5.19.7/6.2.6 STOMP NIO Codec buffer overflow (EUVD-2026-40278)
vuldb·2026-07-04·CVSS 7.5
CVE-2026-53916 [HIGH] Apache ActiveMQ up to 5.19.7/6.2.6 STOMP NIO Codec buffer overflow (EUVD-2026-40278)
A vulnerability described as critical has been identified in Apache ActiveMQ up to 5.19.7/6.2.6. This affects an unknown function of the component STOMP NIO Codec. The manipulation results in buffer overflow.
This vulnerability was named CVE-2026-53916. The attack may be performed from remote. There is no available exploit.
Upgrading the affected component is recommended.
GHSA
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
ghsa_unreviewed·2026-06-30
CVE-2026-53916 [HIGH] CWE-789 Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap.
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [epel-all]
bugzilla·2026-06-30·CVSS 7.5
CVE-2026-53916 [HIGH] CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [epel-all]
CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap.
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 befor
Bugzilla
CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [fedora-all]
bugzilla·2026-06-30·CVSS 7.5
CVE-2026-53916 [HIGH] CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [fedora-all]
CVE-2026-53916 activemq-cpp: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap.
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 bef
Bugzilla
CVE-2026-53916 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
bugzilla·2026-06-30·CVSS 7.5
CVE-2026-53916 [HIGH] CVE-2026-53916 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
CVE-2026-53916 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: Unbounded header buffer in STOMP NIO codec
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
An unauthenticated client that opens a STOMP NIO connection can send header bytes that never terminate which makes the broker buffer them without limit, exhausting the JVM heap.
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.
2026-06-30
Published