CVE-2026-53916: Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. An unauthenticated client that opens a STOMP NIO connect
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-53916
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-539160.80% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-53916 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Memory Allocation with
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- lowCVE-2026-61465: ImageMagick before 7.1.2-26 and 6.9.13-51 is missing a check for the allowed memory allocation…nvd · 2026-07-11
- lowCVE-2026-56373: ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that us…nvd · 2026-07-10
- highCVE-2026-40006: Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttl…nvd · 2026-07-10
- unknownCVE-2026-42953: The application contains an out-of-bounds write vulnerability that can be exploited by an atta…nvd · 2026-07-07
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