# CVE-2026-81288: Upsell Order Bump Offer for WooCommerce unauthenticated cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-81288-upsell-order-bump-offer-for-woocommerce-unauthenticated-cross  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-02. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-81288 · Severity: high · CVSS 7.1 · Published 2026-09-02

The Upsell Order Bump Offer for WooCommerce is a WordPress plugin that enables online merchants to offer additional products during checkout. An unauthenticated attacker can inject malicious scripts through the plugin's interface that execute in visitors' browsers, potentially stealing customer data, hijacking accounts, or redirecting users to phishing pages. This directly threatens customer trust and the security of e-commerce transactions.

## Quick answers

**Is CVE-2026-81288 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81288 being exploited in the wild.

**How severe is CVE-2026-81288?** High severity, with a CVSS score of 7.1, published 2 September 2026.

**Which products and versions are affected?** Upsell Order Bump Offer for WooCommerce Upsell Order Bump Offer for WooCommerce 3.1.5 and earlier.

**Is there a fix for CVE-2026-81288?** A patch was published on 2026-09: Fixed in version 3.1.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-81288 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-81288?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a reflected or stored Cross-Site Scripting (XSS) vulnerability (CWE-79) in the Upsell Order Bump Offer for WooCommerce plugin versions 3.1.5 and earlier. The vulnerability requires user interaction—an attacker must trick an admin or privileged user into clicking a malicious link or visiting a crafted page to trigger the XSS payload. No authentication is required for the attack vector itself, though exploitation may depend on the victim's privilege level. Successful exploitation allows arbitrary JavaScript execution in the context of the affected user's browser session, enabling account takeover, data theft, or further malicious actions. The vulnerability has been patched in version 3.1.6.

## Affected products

- Upsell Order Bump Offer for WooCommerce Upsell Order Bump Offer for WooCommerce 3.1.5 and earlier

## Timeline

- 2026-09-02: disclosed: Published on NVD
- 2026-09: patched: Fixed in version 3.1.6
- 2026-08-02: other: Reported by Ivaylo Atanassov

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/upsell-order-bump-offer-for-woocommerce/vulnerability/wordpress-upsell-order-bump-offer-for-woocommerce-plugin-3-1-5-cross-site-scripting-xss-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/upsell-order-bump-offer-for-woocommerce/vulnerability/wordpress-upsell-order-bump-offer-for-woocommerce-plugin-3-1-5-cross-site-scripting-xss-vulnerability?_s_id=cve)