Cross-Site Scripting
4 records66.7%First: 2023. Latest: 2026.
Plugin security history
MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder Vulnerability History & Security Timeline
The Wordfence Intelligence dataset currently contains 6 vulnerability records associated with MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder, published between 2015 and 2026.
Dataset last synchronized: 2026-08-02 09:41:47 UTC
At a glance
Security Snapshot
6Total records
0Critical
2High
4Medium
0Low
0Informational
6Patched records
0Currently marked unpatched
2015-04-21First disclosure
2026-07-31Latest disclosure
5 of 6CVE coverage
Year-by-Year Timeline
| Year | Records | Relative volume |
|---|---|---|
| 2015 | 1 | |
| 2023 | 2 | |
| 2024 | 1 | |
| 2025 | 1 | |
| 2026 | 1 |
Severity Breakdown
| Severity | Records | Share |
|---|---|---|
| High | 2 | 33.3% |
| Medium | 4 | 66.7% |
Vulnerability-Type Breakdown
Other
2 records33.3%First: 2015. Latest: 2023.
Patch Status
- Patched
- 6
- Currently marked unpatched
- 0
- Unknown status
- 0
Patch status reflects the latest successfully synchronized source dataset and must be checked against the installed version.
Latest Known Patched Versions
4.3.44.24.0.9.84.0.9.24.0.9.41.2
Affected-Version History
Ranges are deduplicated by source range record and shown with the associated disclosure and known patched versions.
| Affected range | Vulnerability | Published | Patched version | Severity |
|---|---|---|---|---|
*-4.3.3 | MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder <= 4.3.3 - Unauthenticated Stored Cross-Site Scripting via Form Field Values | July 31, 2026 | 4.3.4 | High |
*-4.1 | MailChimp Subscribe Forms <= 4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting | January 15, 2025 | 4.2 | Medium |
*-4.0.9.7 | MailChimp Subscribe Forms <= 4.0.9.7 - Authenticated (Editor+) Stored Cross-Site Scripting | August 9, 2024 | 4.0.9.8 | Medium |
*-4.0.9.1 | MailChimp Subscribe Forms <= 4.0.9.1 - Authenticated (Administrator+) Stored Cross-Site Scripting | May 22, 2023 | 4.0.9.2 | Medium |
*-4.0.9.3 | MailChimp Subscribe Forms <= 4.0.9.3 - Open Redirect | May 10, 2023 | 4.0.9.4 | Medium |
[*, 1.2) | MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder < 1.2 - Remote Code Execution | April 21, 2015 | 1.2 | High |
Selected source records
Latest Records
HighCVE-2026-15052
MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder <= 4.3.3 - Unauthenticated Stored Cross-Site Scripting via Form Field Values
Published: July 31, 2026
- Affected versions
- *-4.3.3
- Patched versions
- 4.3.4
MediumCVE-2025-22727
MailChimp Subscribe Forms <= 4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Published: January 15, 2025
- Affected versions
- *-4.1
- Patched versions
- 4.2
MediumCVE-2024-43211
MailChimp Subscribe Forms <= 4.0.9.7 - Authenticated (Editor+) Stored Cross-Site Scripting
Published: August 9, 2024
- Affected versions
- *-4.0.9.7
- Patched versions
- 4.0.9.8
MediumCVE-2023-33328
MailChimp Subscribe Forms <= 4.0.9.1 - Authenticated (Administrator+) Stored Cross-Site Scripting
Published: May 22, 2023
- Affected versions
- *-4.0.9.1
- Patched versions
- 4.0.9.2
MediumCVE-2023-32517
MailChimp Subscribe Forms <= 4.0.9.3 - Open Redirect
Published: May 10, 2023
- Affected versions
- *-4.0.9.3
- Patched versions
- 4.0.9.4
High
MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder < 1.2 - Remote Code Execution
Published: April 21, 2015
- Affected versions
- [*, 1.2)
- Patched versions
- 1.2
Highest-Severity Records
High
MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder < 1.2 - Remote Code Execution
Published: April 21, 2015
- Affected versions
- [*, 1.2)
- Patched versions
- 1.2
HighCVE-2026-15052
MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder <= 4.3.3 - Unauthenticated Stored Cross-Site Scripting via Form Field Values
Published: July 31, 2026
- Affected versions
- *-4.3.3
- Patched versions
- 4.3.4
MediumCVE-2025-22727
MailChimp Subscribe Forms <= 4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Published: January 15, 2025
- Affected versions
- *-4.1
- Patched versions
- 4.2
MediumCVE-2023-32517
MailChimp Subscribe Forms <= 4.0.9.3 - Open Redirect
Published: May 10, 2023
- Affected versions
- *-4.0.9.3
- Patched versions
- 4.0.9.4
MediumCVE-2024-43211
MailChimp Subscribe Forms <= 4.0.9.7 - Authenticated (Editor+) Stored Cross-Site Scripting
Published: August 9, 2024
- Affected versions
- *-4.0.9.7
- Patched versions
- 4.0.9.8
MediumCVE-2023-33328
MailChimp Subscribe Forms <= 4.0.9.1 - Authenticated (Administrator+) Stored Cross-Site Scripting
Published: May 22, 2023
- Affected versions
- *-4.0.9.1
- Patched versions
- 4.0.9.2
Need help reviewing an exposed WordPress website?
Running an affected version does not prove that a website was compromised. Suspicious redirects, unknown administrators, injected content, unexpected files or recurring malware may require a manual investigation.
Vulnerability data: Wordfence Intelligence. Analysis and practical guidance: 3Zero Digital.
Data Source, Attribution and Methodology
This page aggregates active Production Feed records. Counts are not software-quality rankings, and an affected version does not prove exploitation or infection. Read the full methodology.