CVE-2026-14824Public exploitNetwork attack vector

Contributor-level stored XSS via unquoted required attribute

Published Aug 4, 2026 · Updated Aug 4, 2026

Stored XSS in ExpressTech Systems Quiz and Survey Master before 11.2.2 allows remote authenticated users to execute JavaScript in quiz viewers. The Polar question renderer emits the stored required setting into an unquoted data-is_required HTML attribute without contextual escaping. Contributor-level access and an owned quiz embedded on a page are required; opening the quiz runs the payload in each viewer's site origin.

CVSS severity4.8
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in ExpressTech Systems Quiz and Survey Master before 11.2.2 allows remote authenticated users to execute JavaScript in quiz viewers. The Polar question renderer emits the stored required setting into an unquoted data-is_required HTML attribute without contextual escaping. Contributor-level access and an owned quiz embedded on a page are required; opening the quiz runs the payload in each viewer's site origin.

The record

CVE
CVE-2026-14824
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=0 <11.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <11.2.2

Published CVSS scores

4.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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