Is CVE-2026-3962 actively exploited?

No active exploitation of CVE-2026-3962 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3962 be exploited remotely?

Yes. CVE-2026-3962 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3962?

CVE-2026-3962 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-3962

CWE-79Published: March 11, 2026· Updated: Mar 12, 2026

4.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.5th

Official Description

A vulnerability was identified in Jcharis Machine-Learning-Web-Apps up to a6996b634d98ccec4701ac8934016e8175b60eb5. The impacted element is the function render_template of the file Machine-Learning-Web-Apps-master/Build-n-Deploy-Flask-App-with-Waypoint/app/app.py of the component Jinja2 Template Handler. Such manipulation leads to cross site scripting. It is possible to launch the attack remotely. The exploit is publicly available and might be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-3962 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.