CVE-2026-39508: Josh Kohlbach Advanced Coupons for WooCommerce DOM XSS

CVE-2026-39508 · Severity: medium · CVSS 6.5 · Published 2026-04-08

Advanced Coupons for WooCommerce is a WordPress plugin used to manage promotional offers and discounts for online stores. A security vulnerability in this plugin could allow an attacker with low-level access to inject malicious scripts into the website. If a site administrator or customer interacts with the affected area, the attacker could potentially redirect users to malicious sites, display unauthorized advertisements, or steal session information.

Vendors: Rymera Web Co.

Quick answers

Is CVE-2026-39508 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-39508 being exploited in the wild.
How severe is CVE-2026-39508?
Medium severity, with a CVSS score of 6.5, published 8 April 2026.
Which products and versions are affected?
Rymera Web Co Advanced Coupons <= 4.7.1.1.
Is there a fix for CVE-2026-39508?
A patch was published on 2026-04-08: Fixed in version 4.7.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-39508 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-39508?
Check whether you run Rymera Web Co Advanced Coupons at an affected version. 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

A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the Advanced Coupons for WooCommerce Coupons plugin (advanced-coupons-for-woocommerce-free) due to improper neutralization of input during web page generation. The flaw allows an authenticated attacker with 'Contributor' level privileges to inject malicious scripts that execute in the context of a victim's browser. Successful exploitation requires user interaction, such as a privileged user clicking a crafted link or visiting a specific page. This can lead to unauthorized script execution, session hijacking, or website defacement. The issue is addressed in version 4.7.2.

Affected products

  • Josh Kohlbach / Rymera Web Co Advanced Coupons for WooCommerce Coupons <= 4.7.1.1

Timeline

  • 2026-02-26: disclosed: Vulnerability reported by researcher timomangcut
  • 2026-03-28: advisory: Patchstack published advisory and assigned PSID 0c1c19194b58
  • 2026-04-08: advisory: CVE-2026-39508 published to NVD
  • 2026-04-08: patched: Fixed in version 4.7.2

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.