CVE-2026-50750: Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Following the fix for CVE-2026-49270 an unauthenticated attacke
Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.
Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.
This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.
Users are recommended to upgrade to version 6.2.7, which fixes the issue.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-50750
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-2026-507500.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-50750 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Denial of Service
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-42952: Previously, there was no throttling on repeated authentication attempts to the charging statio…nvd · 2026-07-10
- highCVE-2026-39244: adm-zip before 0.5.18 is vulnerable to denial of service via a crafted ZIP file with a manipul…nvd · 2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund · 2026-07-10
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