CVE-2026-40770 HIGH

CVE-2026-40770: WordPress Coupon Affiliates plugin <= 7.5.3 - Cross Site Scripting (XSS) vulnerability

Vendor Relywp

Product Coupon Affiliates

Weakness CWE-79 · XSS

Published June 15, 2026

Last update June 15, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in Coupon Affiliates <= 7.5.3 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Coupon Affiliates versions 7.5.3 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into the site. An attacker can craft a malicious link that, when visited by a site administrator or user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in the browsers of site users and administrators.

Potential impact on your site

04Site Impact

Administrators and users visiting malicious links could have their sessions hijacked, credentials stolen, or be tricked into performing unwanted actions on the site.

Conditions required to exploit

05Prerequisites

Attacker must trick a user into clicking a malicious link or visiting a crafted page (user interaction required).

Key dates

06Disclosure timeline

June 15, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-40770 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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