What is CVE-2026-36590?

CVE-2026-36590 is a high-severity vulnerability in Emqx Nanomq, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-15.

How severe is CVE-2026-36590?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2026-36590 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Emqx Nanomq

CVE-2026-36590

An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Emqx Nanomq — versions 0.24.9
N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

MoXie25/NanoMQ-Memory-Leak-Research

References

cve@mitre.org (Vendor Advisory)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-36590?: CVE-2026-36590 is a high-severity vulnerability in Emqx Nanomq, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-15.
How severe is CVE-2026-36590?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2026-36590 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.