Skip to content
Founder-led WordPress incident response and care Request an assessment
3zerodigital Request a Website Assessment

WordPress security records

WordPress Vulnerability Listing

Filter Production Feed records and inspect affected software, version ranges, severity, patch information and source attribution without opening separate UUID pages.

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

Clear filters

6 vulnerability records

CriticalCVE-2026-57813

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.77.3 - Unauthenticated Privilege Escalation

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: *-1.2.77.3

Vulnerability type: CWE-266 Incorrect Privilege Assignment

Affected software, patched versions and attribution

The MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.2.77.3. This makes it possible for unauthenticated attackers to elevate their privileges.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: *-1.2.77.3

Patched versions: 1.2.78.0

Researcher credit: qdtad

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
July 9, 2026
CVSS
9.8
MediumCVE-2025-58596

MailOptin <= 1.2.75.0 - Authenticated (Administrator+) Stored Cross-Site Scripting

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: *-1.2.75.0

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

Affected software, patched versions and attribution

The MailOptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.2.75.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only impacts multi-site installations and installations where unfiltered_html has been disabled.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: *-1.2.75.0

Patched versions: 1.2.75.1

Researcher credit: Fiqro Najiah (EscapesCode)

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 3, 2025
CVSS
4.4
MediumCVE-2024-8628

Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin <= 1.2.70.3 - Authenticated (Contributor+) Stored Cross-Site Scripting

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: *-1.2.70.3

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

Affected software, patched versions and attribution

The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'post-meta' shortcode in all versions up to, and including, 1.2.70.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: *-1.2.70.3

Patched versions: 1.2.70.4

Researcher credit: Francesco Carlucci

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 23, 2024
CVSS
5.4
MediumCVE-2023-23980

MailOptin <= 1.2.54.0 - Authenticated (Admin+) Cross Site Scripting

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: 1.2.54.0

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

Affected software, patched versions and attribution

The MailOptin plugin for WordPress is vulnerable to Cross-Site Scripting in versions up to, and including, 1.2.54.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with admin-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: 1.2.54.0

Patched versions: 1.2.54.1

Researcher credit: yuyudhn

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 20, 2023
CVSS
5.5
MediumCVE-2022-36340

MailOptin <= 1.2.49.0 - Missing Authorization to Cache Deletion

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: *-1.2.49.0

Vulnerability type: CWE-862 Missing Authorization

Affected software, patched versions and attribution

The MailOptin plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the clear_optin_cache function in versions up to, and including, 1.2.49.0. This makes it possible for unauthenticated attackers to clear the plugin's cache. Additionally, the function was also missing a nonce check.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: *-1.2.49.0

Patched versions: 1.2.50.0

Researcher credit: Muhammad Daffa

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 23, 2022
CVSS
5.3
High

Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin <= 1.2.35.1 - Authorization Bypass

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.: Currently marked unpatched

Affected versions: *-1.2.35.1

Vulnerability type: CWE-862 Missing Authorization

Affected software, patched versions and attribution

The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the fetch_custom_fields and fetch_tags functions in versions up to, and including, 1.2.35.1. This makes it possible for unauthenticated attackers to read and edit Elementor custom fields and tags.

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected versions: *-1.2.35.1

Patched versions: 1.2.35.2

Researcher credit: WPScanTeam

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

Original Wordfence record
Published
June 30, 2021
CVSS
7.3

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.