Is CVE-2026-40770 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-40770 being exploited in the wild.

How severe is CVE-2026-40770?

High severity, with a CVSS score of 7.1, published 15 June 2026.

Which products and versions are affected?

RelyWP Coupon Affiliates <= 7.5.3.

Is there a fix for CVE-2026-40770?

A patch was published on 2026-04-21: Version 7.6.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-40770 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-40770?

Check whether you run RelyWP Coupon Affiliates 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.

CVE-2026-40770: RelyWP Coupon Affiliates unauthenticated XSS

Q: Is there a fix for CVE-2026-40770?

A patch was published on 2026-04-21: Version 7.6.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-40770 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-40770?

Check whether you run RelyWP Coupon Affiliates 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.

CVE-2026-40770 · Severity: high · CVSS 7.1 · Published 2026-06-15

The Coupon Affiliates plugin for WordPress, which helps businesses manage affiliate marketing and discount programs, contains a security flaw that allows attackers to inject malicious scripts into the website. If a site administrator or visitor interacts with a specially crafted link, the attacker could potentially hijack sessions, redirect users to malicious sites, or deface the website. This vulnerability can be exploited by anyone on the internet without needing an account on the affected site.

Vendors: RelyWP.

Quick answers

Is CVE-2026-40770 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-40770 being exploited in the wild.
How severe is CVE-2026-40770?: High severity, with a CVSS score of 7.1, published 15 June 2026.
Which products and versions are affected?: RelyWP Coupon Affiliates <= 7.5.3.
Is there a fix for CVE-2026-40770?: A patch was published on 2026-04-21: Version 7.6.0 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-40770 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-40770?: Check whether you run RelyWP Coupon Affiliates 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 Cross-Site Scripting (XSS) vulnerability exists in the Coupon Affiliates plugin for WordPress (versions 7.5.3 and below) due to improper neutralization of input during web page generation (CWE-79). The flaw allows an unauthenticated remote attacker to inject arbitrary JavaScript into the application. Successful exploitation requires a victim (typically a site administrator) to perform an action, such as clicking a malicious link or visiting a crafted page. This can lead to the execution of malicious scripts in the context of the victim's browser session, potentially resulting in session hijacking or unauthorized administrative actions. The issue is resolved in version 7.6.0.

Affected products

RelyWP Coupon Affiliates <= 7.5.3

Timeline

2026-03-07: other: Reported by Nguyen Ba Khanh
2026-04-21: advisory: Initial advisory published by Patchstack
2026-06-15: disclosed: CVE published to NVD
2026-04-21: patched: Version 7.6.0 released to address the vulnerability

References

https://patchstack.com/database/wordpress/plugin/woo-coupon-usage/vulnerability/wordpress-coupon-affiliates-plugin-7-5-3-cross-site-scripting-xss-vulnerability?_s_id=cve

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