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WordPress Vulnerability Listing

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Dataset last synchronized: 2026-08-03 00:31:25 UTC

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6 vulnerability records

MediumCVE-2024-4045

Popup Builder by OptinMonster – WordPress Popups for Optins, Email Newsletters and Lead Generation <= 2.16.1 - Authenticated (Contributor+) Stored Cross-Site Scripting

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: *-2.16.1

Vulnerability type: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected software, patched versions and attribution

The Popup Builder by OptinMonster – WordPress Popups for Optins, Email Newsletters and Lead Generation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘campaign_id’ parameter in versions up to, and including, 2.16.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: *-2.16.1

Patched versions: 2.16.2

Researcher credit: wesley (wcraft)

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
May 24, 2024
CVSS
6.4
InformationalCVE-2024-33691

Popup Builder by OptinMonster – WordPress Popups for Optins, Email Newsletters and Lead Generation <= 2.15.3 - Cross-Site Request Forgery to Notice Dismissal

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: *-2.15.3

Vulnerability type: CWE-352 Cross-Site Request Forgery (CSRF)

Affected software, patched versions and attribution

The OptinMonster plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.15.3. This is due to missing or incorrect nonce validation on the validate_please_connect_notice_dismiss() function. This makes it possible for unauthenticated attackers to dismiss notices via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: *-2.15.3

Patched versions: 2.16.0

Researcher credit: Dhabaleshwar Das

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
April 26, 2024
CVSS
4.3
MediumCVE-2023-0772

OptinMonster <= 2.12.1 - Authenticated (Subscriber+) Sensitive Information Disclosure via Shortcode

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: *-2.12.1

Vulnerability type: CWE-639 Authorization Bypass Through User-Controlled Key

Affected software, patched versions and attribution

The OptinMonster plugin for WordPress is vulnerable to unauthorized access of data due to insufficient post type validation on the 'prepare_campaign' function in versions up to 2.12.1. This makes it possible for authenticated attackers with subscriber-level access, and above, to access potentially sensitive information due to lack of protections and information restrictions that let campaign information or even private post and content information to be leaked.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: *-2.12.1

Patched versions: 2.12.2

Researcher credit: Erwan LR

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
March 3, 2023
CVSS
4.3
HighCVE-2021-39341

OptinMonster <= 2.6.4 - Unprotected REST-API Endpoints

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: *-2.6.4

Vulnerability type: CWE-285 Improper Authorization

Affected software, patched versions and attribution

The OptinMonster WordPress plugin is vulnerable to sensitive information disclosure and unauthorized setting updates due to insufficient authorization validation via the logged_in_or_has_api_key function in the ~/OMAPI/RestApi.php file that can used to exploit inject malicious web scripts on sites with the plugin installed. This affects versions up to, and including, 2.6.4.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: *-2.6.4

Patched versions: 2.6.5

Researcher credit: Chloe Chamberland

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
November 1, 2021
CVSS
8.2
MediumCVE-2021-39325

OptinMonster <= 2.6.0 - Reflected Cross-Site Scripting

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: *-2.6.0

Vulnerability type: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected software, patched versions and attribution

The OptinMonster WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to insufficient input validation in the load_previews function found in the ~/OMAPI/Output.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.6.0.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: *-2.6.0

Patched versions: 2.6.1

Researcher credit: Mariia Aleksandrova

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
September 20, 2021
CVSS
6.1
MediumCVE-2016-10996

Popup Builder by OptinMonster <= 1.1.4.5 - Remote Code Execution

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation: Currently marked unpatched

Affected versions: [*, 1.1.4.6)

Vulnerability type: CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected software, patched versions and attribution

The OptinMonster plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 1.1.4.5 via the shortcode() function. This allows unauthenticated attackers to execute code on the server.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation

Affected versions: [*, 1.1.4.6)

Patched versions: 1.1.4.6

Researcher credit: James Golovich

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
January 14, 2016
CVSS
5.3

Vulnerability data: Wordfence Intelligence. Analysis and practical guidance: 3Zero Digital.

Data Source, Attribution and Methodology

Production Feed records are aggregated without claiming discovery, exploitation or infection. Applicable source notices remain attached to individual records. Read the methodology.