CVE-2023-3954Public exploitNetwork attack vector

Administrator script execution via reflected nonce parameter

Published Aug 21, 2023 · Updated May 5, 2025

Reflected XSS in MultiParcels Shipping For WooCommerce before 1.15.4 allows remote attackers to run scripts in an administrator's browser. The admin-post deletion action reflects the _wpnonce parameter into an HTML response without sanitization or output escaping. Exploitation requires an administrator to open a crafted URL, after which attacker-supplied script executes with that administrator's browser privileges.

CVSS severity6.1
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in MultiParcels Shipping For WooCommerce before 1.15.4 allows remote attackers to run scripts in an administrator's browser. The admin-post deletion action reflects the _wpnonce parameter into an HTML response without sanitization or output escaping. Exploitation requires an administrator to open a crafted URL, after which attacker-supplied script executes with that administrator's browser privileges.

The record

CVE
CVE-2023-3954
Published
Aug 21, 2023
Updated
May 5, 2025
Vendor
MultiParcels
Product
MultiParcels Shipping For WooCommerce
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2023CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.15.2 <1.15.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MultiParcels · MultiParcels Shipping For WooCommerceversion=1.15.2 <1.15.4

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo