CVE-2026-3962Public exploitNetwork attack vector

Reflected XSS via unescaped preview input

Published Mar 11, 2026 · Updated Mar 11, 2026

Reflected XSS in JCharisTech Machine-Learning-Web-Apps allows remote attackers to execute script in a user's browser via POST /preview. The preview function passes request.form['newtext'] unchanged to preview.html, whose response renders an injected event handler as executable markup. Exploitation is unauthenticated but requires a victim to render the crafted response, limiting the reported impact to browser-side content modification.

CVSS severity4.3
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in JCharisTech Machine-Learning-Web-Apps allows remote attackers to execute script in a user's browser via POST /preview. The preview function passes request.form['newtext'] unchanged to preview.html, whose response renders an injected event handler as executable markup. Exploitation is unauthenticated but requires a victim to render the crafted response, limiting the reported impact to browser-side content modification.

The record

CVE
CVE-2026-3962
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
JCharisTech
Product
Machine-Learning-Web-Apps
Classifications
CWE-79, CWE-94
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=a6996b634d98ccec4701ac8934016e8175b60eb5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JCharisTech · Machine-Learning-Web-Appsversion=a6996b634d98ccec4701ac8934016e8175b60eb5

Published CVSS scores

4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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