CVE-2026-97074
Received Received - Intake

Subscriber IDOR in Omnisend Newsletters & Popups <= 1.9.0

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: Patchstack

Description
Subscriber Insecure Direct Object References (IDOR) in Newsletters, Email Marketing, SMS and Popups by Omnisend <= 1.9.0 versions.

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Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-09-30
AI Q&A
2026-09-30
EPSS Evaluated
N/A
NVD
CVE-2026-97074
EUVD
EUVD-2026-89894

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
omnisend newsletters to 1.9.0 (inc)
omnisend newsletters_email_marketing_sms_and_popups to 1.9.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

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Executive Summary

This vulnerability is an Insecure Direct Object References (IDOR) flaw in the WordPress plugin 'Newsletters, Email Marketing, SMS and Popups by Omnisend' versions up to 1.9.0. It allows attackers with low privileges, such as a Subscriber role, to manipulate IDs in URLs to access sensitive data belonging to other users.

Detection Guidance

To detect this IDOR vulnerability, check if the WordPress plugin 'Newsletters, Email Marketing, SMS and Popups by Omnisend' is installed and if its version is 1.9.0 or lower. You can verify the version via WordPress admin panel or by inspecting plugin files. Look for unusual data exposure when manipulating URL parameters as a Subscriber role user.

Impact Analysis

An attacker could exploit this to view or access data of other users, such as email lists or subscriber information, potentially leading to privacy breaches or unauthorized actions within the plugin.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and access controls. Compliance may be compromised if sensitive user data is exposed.

Mitigation Strategies

Immediately update the 'Newsletters, Email Marketing, SMS and Popups by Omnisend' plugin to version 1.9.1 or later. If automatic updates are enabled, ensure they are functioning. If not, manually download and install the latest version from the official WordPress plugin repository.

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