CVE-2022-3739Public exploitNetwork attack vector

Author-level stored XSS via category name rendering

Published Jan 16, 2024 · Updated Jun 20, 2025

Stored cross-site scripting in Subina WP Best Quiz 1.0 and earlier allows remote authenticated users to execute scripts via category names. The Quiz Add Categories workflow stores an unsanitized category name and later renders it without escaping when the dashboard is revisited. Author-level access is sufficient to plant a payload, but another user must open the affected dashboard page for the script to execute in that user's browser.

CVSS severity5.4
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Subina WP Best Quiz 1.0 and earlier allows remote authenticated users to execute scripts via category names. The Quiz Add Categories workflow stores an unsanitized category name and later renders it without escaping when the dashboard is revisited. Author-level access is sufficient to plant a payload, but another user must open the affected dashboard page for the script to execute in that user's browser.

The record

CVE
CVE-2022-3739
Published
Jan 16, 2024
Updated
Jun 20, 2025
Vendor
Subina
Product
WP Best Quiz
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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 <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Subina · WP Best Quizversion=0 <=1.0

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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')
T1059.007Command 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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