CVE-2024-6879Public exploitNetwork attack vector

Stored XSS via unvalidated redirect URL

Published Aug 26, 2024 · Updated Aug 28, 2024

Stored XSS in Quiz and Survey Master before 9.1.1 allows remote authenticated users to execute JavaScript through an embedded quiz. The Results Page redirect URL field accepts a javascript URI and later emits it for quiz submission without validating or escaping the stored value. Contributor access is required to save the payload, and JavaScript executes in the browser of any visitor who submits the embedded quiz.

CVSS severity4.7
Medium
EPSS probability0.43%
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 Quiz and Survey Master before 9.1.1 allows remote authenticated users to execute JavaScript through an embedded quiz. The Results Page redirect URL field accepts a javascript URI and later emits it for quiz submission without validating or escaping the stored value. Contributor access is required to save the payload, and JavaScript executes in the browser of any visitor who submits the embedded quiz.

The record

CVE
CVE-2024-6879
Published
Aug 26, 2024
Updated
Aug 28, 2024
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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 <9.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <9.1.1

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/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

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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