Elementor Pro <= 4.2.1 - Unauthenticated Arbitrary File Upload via Upload Field Array Validation Bypass
The Elementor Pro plugin for WordPress is vulnerable to Unrestricted File Type Upload in all versions up to, and including, 4.2.1 via the process_field function. This is due to a validation loop in Upload::validation() using 'return' instead of 'continue' when the first array element has UPLOAD_ERR_NO_FILE, aborting all extension and file type checks for remaining files in the same upload field. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. This requires that the targeted site has published a page containing an Elementor Pro Form widget with at least one non-required File Upload field.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Elementor Website Builder Pro | <= 4.2.1 | 4.2.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- WordPress
- Package
Elementor Website Builder Pro- Disclosed
- 19.08.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 0a32b02f-db40-42fe-b46c-4a5f2bc9ba09 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Elementor Website Builder Pro
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 17
- First → latest
- 10.2018 08.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 2
- Medium 13
Disclosures per year
- 2018: 1
- 2019: 0
- 2020: 2
- 2021: 0
- 2022: 0
- 2023: 2
- 2024: 8
- 2025: 3
- 2026: 1
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Elementor Pro <= 4.2.1 - Unauthenticated Arbitrary File Upload via Upload Field Array Validation Bypass this entry
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