CVE-2024-4934Public exploitNetwork attack vector

Contributor-level stored XSS via unescaped answer fields

Published Jul 1, 2024 · Updated Aug 1, 2024

Stored XSS in ExpressTech Systems Quiz and Survey Master before 9.0.2 allows remote authenticated users to execute script in viewers' browsers. The plugin stores an answer-field HTML payload and outputs it without validation or escaping when an embedded quiz is opened in the post editor. Contributor-level access is required, and an administrator must edit the post and click the quiz; the script can act in that administrator's session.

CVSS severity5.5
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

Stored XSS in ExpressTech Systems Quiz and Survey Master before 9.0.2 allows remote authenticated users to execute script in viewers' browsers. The plugin stores an answer-field HTML payload and outputs it without validation or escaping when an embedded quiz is opened in the post editor. Contributor-level access is required, and an administrator must edit the post and click the quiz; the script can act in that administrator's session.

The record

CVE
CVE-2024-4934
Published
Jul 1, 2024
Updated
Aug 1, 2024
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record 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 <9.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <9.0.2

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript

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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