CVE-2023-0429Public exploitNetwork attack vector

Stored XSS via unescaped quiz terminology settings

Published Feb 21, 2023 · Updated Mar 12, 2025

Stored XSS in Kiboko Labs Ltd. Watu Quiz before 3.3.8.2 allows remote authenticated users with administrator privileges to run script. The plugin stores a crafted value in the “Words used for quiz/quizzes” setting without sanitization and renders it again without sufficient escaping. Administrator privileges are required to save the payload, and revisiting the settings page executes it even when unfiltered_html is disabled.

CVSS severity3.5
Low
EPSS probability0.47%
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 Kiboko Labs Ltd. Watu Quiz before 3.3.8.2 allows remote authenticated users with administrator privileges to run script. The plugin stores a crafted value in the “Words used for quiz/quizzes” setting without sanitization and renders it again without sufficient escaping. Administrator privileges are required to save the payload, and revisiting the settings page executes it even when unfiltered_html is disabled.

The record

CVE
CVE-2023-0429
Published
Feb 21, 2023
Updated
Mar 12, 2025
Vendor
Kiboko Labs Ltd.
Product
Watu Quiz
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2025Record 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 <3.3.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Kiboko Labs Ltd. · Watu Quizversion=0 <3.3.8.2

Published CVSS scores

3.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
4.8NIST NVDCVSS: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
Privilegesadmin
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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