What is CVE-2026-46411?

CVE-2026-46411 is a medium-severity vulnerability in Halfgaar Flashmq, classified under CWE-248. CVSS score: 6.5/10. Published 2026-06-10.

How severe is CVE-2026-46411?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Halfgaar Flashmq

CVE-2026-46411

FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.2, authorized clients have the ability to exceed the permitted over-commit of their write buffer and triggering an internal safe-guard exception. T…

EPSS: 0.003 (22.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Halfgaar Flashmq — versions < 1.26.2

Weakness classification (CWE)

CWE-248

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-46411?: CVE-2026-46411 is a medium-severity vulnerability in Halfgaar Flashmq, classified under CWE-248. CVSS score: 6.5/10. Published 2026-06-10.
How severe is CVE-2026-46411?: Medium severity. CVSS v3 base score is 6.5 out of 10.