CVE-2026-81288
Received Received - Intake

Unauthenticated XSS in Upsell Order Bump Offer for WooCommerce

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Patchstack

Description
Unauthenticated Cross Site Scripting (XSS) in Upsell Order Bump Offer for WooCommerce <= 3.1.5 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-81288
EUVD
EUVD-2026-69924

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
woocommerce upsell_order_bump_offer to 3.1.5 (inc)
patchstack upsell_order_bump_offer_for_woocommerce to 3.1.5 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability in the Upsell Order Bump Offer for WooCommerce plugin versions 3.1.5 and below. It allows attackers to inject malicious scripts into websites that execute when visitors access the site. The vulnerability requires user interaction like clicking a malicious link and can be exploited by unauthenticated users.

Detection Guidance

To detect this XSS vulnerability, check if the Upsell Order Bump Offer for WooCommerce plugin version is 3.1.5 or below. Inspect web server logs for unusual script injections or user inputs containing malicious payloads. Use tools like Wordfence or Patchstack to scan for vulnerable plugin versions.

Impact Analysis

Attackers could inject malicious scripts into your website, potentially stealing user data, session cookies, or performing actions on behalf of users. This could lead to unauthorized access, data breaches, or defacement of your website. The risk is considered moderately dangerous with a CVSS score of 7.1.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR or HIPAA requirements for protecting user data. Organizations could face fines or penalties if exploited due to inadequate security measures.

Mitigation Strategies

Immediately update the Upsell Order Bump Offer for WooCommerce plugin to version 3.1.6 or later. Apply Patchstack's mitigation rule to block attacks until the update is complete. Remove or disable the plugin if an update is not possible.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-81288. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart