CVE-2023-4821Public exploitNetwork attack vector

Stored XSS via client-controlled upload types

Published Oct 16, 2023 · Updated Apr 23, 2025

Stored XSS in Drag and Drop Multiple File Upload for WooCommerce before 1.1.1 allows remote attackers to run scripts via uploaded files. The dnd_codedropz_upload_wc AJAX action trusts the client-supplied supported_type list, allowing script-bearing SVG or SHTML uploads. No login is required, but a victim must open the stored upload for its script to execute in the site's origin.

CVSS severity5.4
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 Drag and Drop Multiple File Upload for WooCommerce before 1.1.1 allows remote attackers to run scripts via uploaded files. The dnd_codedropz_upload_wc AJAX action trusts the client-supplied supported_type list, allowing script-bearing SVG or SHTML uploads. No login is required, but a victim must open the stored upload for its script to execute in the site's origin.

The record

CVE
CVE-2023-4821
Published
Oct 16, 2023
Updated
Apr 23, 2025
Vendor
Glen Don Mongaya
Product
Drag and Drop Multiple File Upload for WooCommerce
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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 <1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Glen Don Mongaya · Drag and Drop Multiple File Upload for WooCommerceversion=0 <1.1.1

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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