CVE-2024-3964Public exploitNetwork attack vector

Stored XSS via unescaped Custom CSS setting

Published Jul 13, 2024 · Updated Aug 1, 2024

Stored XSS in PI Web Solution Product Enquiry for WooCommerce before 3.1.8 allows remote authenticated users to execute script in visitors' browsers. The Custom CSS setting accepts a closing style tag and script payload, stores it without sanitization, and renders it on product pages without escaping. Administrator access is required to change the setting, and a victim must view a product page; the flaw remains reachable when unfiltered_html is disabled.

CVSS severity5.9
Medium
EPSS probability0.48%
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 PI Web Solution Product Enquiry for WooCommerce before 3.1.8 allows remote authenticated users to execute script in visitors' browsers. The Custom CSS setting accepts a closing style tag and script payload, stores it without sanitization, and renders it on product pages without escaping. Administrator access is required to change the setting, and a victim must view a product page; the flaw remains reachable when unfiltered_html is disabled.

The record

CVE
CVE-2024-3964
Published
Jul 13, 2024
Updated
Aug 1, 2024
Vendor
PI Web Solution
Product
Product Enquiry for WooCommerce
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 13, 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 <3.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

PI Web Solution · Product Enquiry for WooCommerceversion=0 <3.1.8

Published CVSS scores

5.9CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
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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