What is CVE-2025-62413?

CVE-2025-62413 is a medium-severity vulnerability in Emqx Mqttx, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-16.

How severe is CVE-2025-62413?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Emqx Mqttx

CVE-2025-62413

MQTTX is an MQTT 5.0 desktop client and MQTT testing tool. A Cross-Site Scripting (XSS) vulnerability was introduced in MQTTX v1.12.0 due to improper handling of MQTT message payload rendering. Malicious payloads containing HTML or JavaScr…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (21.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Emqx Mqttx — versions = 1.12.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2025-62413?: CVE-2025-62413 is a medium-severity vulnerability in Emqx Mqttx, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-16.
How severe is CVE-2025-62413?: Medium severity. CVSS v3 base score is 6.1 out of 10.