What is CVE-2026-79418?

CVE-2026-79418 is a high-severity vulnerability in Emxtecnologia Gestao X Business Suite, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-04.

How severe is CVE-2026-79418?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Emxtecnologia Gestao X Business Suite

CVE-2026-79418

EMX Tecnologia Gestao X version <= 8.4 contains a Stored Cross-Site Scripting (XSS) vulnerability in the Help Chat functionality. Improper neutralization of user-controlled input during web page generation allows authenticated attackers to execute arbitrary JavaScript in the context of other authenticated users, potentially resulting in session hijacking, account takeover, and unauthorized actions.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-04 · last modified 2026-09-17.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.9th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Emxtecnologia Gestao X Business Suite

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

drive.google.com/file/d/1mp-uS-tAthH9FAObfx1D3lOM7IIjRsmE/view (Technical Description, Exploit, Third Party Advisory)
emxtecnologia.com.br/gestao-x-business-suite/ (Product)

Frequently asked questions

What is CVE-2026-79418?: CVE-2026-79418 is a high-severity vulnerability in Emxtecnologia Gestao X Business Suite, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-04.
How severe is CVE-2026-79418?: High severity. CVSS v3 base score is 8.7 out of 10.