CVE-2024-8758Public exploitNetwork attack vector

Stored XSS via unsanitized custom setting

Published Sep 23, 2024 · Updated Oct 7, 2024

Stored XSS in Quiz and Survey Master before 9.1.3 allows remote authenticated users to execute JavaScript through quiz settings. The Advanced Settings Display Custom field stores inadequately sanitized HTML, and the payload executes when an administrator opens the quiz tools log. Access to create and edit a quiz is required; execution in an administrator's browser can alter site content or create an administrator account.

CVSS severity4.8
Medium
EPSS probability0.40%
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 9.1.3 allows remote authenticated users to execute JavaScript through quiz settings. The Advanced Settings Display Custom field stores inadequately sanitized HTML, and the payload executes when an administrator opens the quiz tools log. Access to create and edit a quiz is required; execution in an administrator's browser can alter site content or create an administrator account.

The record

CVE
CVE-2024-8758
Published
Sep 23, 2024
Updated
Oct 7, 2024
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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 <9.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=0 <9.1.3

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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