Vulnerability · Published Mar 11, 2026 · Assigned by VulDB
CVE-2026-3962Jcharis Machine-Learning-Web-Apps Jinja2 Template app.py render_template cross site scripting
Medium 4.3
In plain English
A medium-severity cross-site scripting in Machine-Learning-Web-Apps from Jcharis. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Jcharis | Machine-Learning-Web-Apps | a6996b634d98ccec4701ac8934016e8175b60eb5 |
Weakness: CWE-79, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
References
- VDB-350391 | Jcharis Machine-Learning-Web-Apps Jinja2 Template app.py render_template cross site scripting vdb-entry, technical-description
- VDB-350391 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #768226 | Jcharis Machine-Learning-Web-Apps <=1.0.0 Reflected XSS third-party-advisory
- https://github.com/Jcharis/Machine-Learning-Web-Apps/issues/15 issue-tracking
- https://github.com/Jcharis/Machine-Learning-Web-Apps/issues/15#issue-3995372171 exploit, issue-tracking
- https://github.com/Jcharis/Machine-Learning-Web-Apps/ product