Unauthenticated code execution via MIME allowlist bypass
Published Sep 10, 2026 · Updated Sep 10, 2026
Arbitrary file upload in Drag and Drop File Upload for Elementor Forms 1.6.0 and earlier allows remote attackers to execute PHP code. The elementor_file_upload path passes attacker-controlled type values to is_file_type_valid as MIME-allowlist regex keys, permitting a crafted extension that sanitize_file_name later normalizes to PHP. No authentication or user interaction is required, and successful exploitation places executable content on the WordPress server.
Summary
What happened
Arbitrary file upload in Drag and Drop File Upload for Elementor Forms 1.6.0 and earlier allows remote attackers to execute PHP code. The elementor_file_upload path passes attacker-controlled type values to is_file_type_valid as MIME-allowlist regex keys, permitting a crafted extension that sanitize_file_name later normalizes to PHP. No authentication or user interaction is required, and successful exploitation places executable content on the WordPress server.
The record
- CVE
- CVE-2026-18351
- Published
- Sep 10, 2026
- Updated
- Sep 10, 2026
- Vendor
- add-ons.org
- Product
- Drag and Drop File Upload for Elementor Forms
- Classifications
- CWE-434, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 10, 2026CVE publishedPublication date reported by the CVE source.
- Sep 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.6.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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