CVE-2023-4666
CriticalExploitedPublic exploitForm Maker by 10Web <= 1.15.19 - Unauthenticated Arbitrary File Upload
Published Oct 17, 2023 · Updated Apr 23, 2025 · Also known as c691d129-35db-4de8-a28e-5e77347e2280
Key Facts
Patch immediately- CVE-2023-4666 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Form Maker (10web), Form Maker by 10Web.
- It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2023. Public exploit code is available.
- EPSS estimates a 3.8% probability of exploitation in the next 30 days.
- Fixed versions are available, including Form Maker 1.15.20, Form Maker by 10Web 1.15.20.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
3.8%
Higher than 89.8% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-4666 brief as a PDF
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Description
The Form Maker by 10Web WordPress plugin before 1.15.20 does not validate signatures when creating them on the server from user input, allowing unauthenticated users to create arbitrary files and lead to RCE
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Sep 7, 2023 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Form Maker10web | See advisory | 1.15.20 |
| Form Maker by 10Web | See advisory | 1.15.20 |
Patched Releases
Form Maker
1.15.20
Form Maker by 10Web
1.15.20
Timeline
Added to Industry KEV feed
Sep 7, 2023
Publicly disclosed
Oct 17, 2023
Last updated
Apr 23, 2025
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- advisoryhttps://patchstack.com/database/vulnerability/amp-wp/wordpress-amp-wp-google-amp-for-wordpress-plugin-1-5-15-cross-site-request-forgery-csrf-vulnerability?_s_id=cve
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-1259
- advisoryhttps://wpscan.com/vulnerability/4086b62c-c527-4721-af63-7f2687c98648/
- advisoryhttps://wpscan.com/vulnerability/c6597e36-02d6-46b4-89db-52c160f418be/
- advisoryhttps://wpscan.com/wordpresses/
FAQ
Common Questions.
The Form Maker by 10Web WordPress plugin before 1.15.20 does not validate signatures when creating them on the server from user input, allowing unauthenticated users to create arbitrary files and lead to RCE
Affected: Form Maker (10web); Form Maker by 10Web. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Form Maker 1.15.20, Form Maker by 10Web 1.15.20.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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