CVE-2026-81290

Received Received - Intake

Unauthenticated XSS in Email Subscribers & Newsletters

Publication date: 2026-08-31

Last updated on: 2026-08-31

Assigner: Patchstack

Description

Unauthenticated Cross Site Scripting (XSS) in Email Subscribers & Newsletters <= 5.9.33 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-31

Last Modified

2026-08-31

Generated

2026-09-01

AI Q&A

2026-09-01

EPSS Evaluated

N/A

NVD

CVE-2026-81290

Affected Vendors & Products

Vendor	Product	Version / Range
mailpoet	email_subscribers_and_newsletters	to 5.9.33 (inc)

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting Email Subscribers & Newsletters plugin versions up to 5.9.33. XSS allows attackers to inject malicious scripts into web pages viewed by other users without needing authentication.

Impact Analysis

An attacker could exploit this to steal user session cookies, redirect users to malicious sites, or perform actions on behalf of users. This could lead to account takeovers or unauthorized data access if users interact with the injected scripts.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations could face compliance penalties if user data is compromised through this flaw.

Mitigation Strategies

Update Email Subscribers & Newsletters plugin to the latest version to patch the XSS vulnerability. If immediate update is not possible, consider disabling the plugin temporarily until patched.

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