CVSS v3
8.1
HIGH
EPSS Score
0.4%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
The WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.10.1.1 via the ajax_chunk_upload_finalize function. This is due to the file type validation occurring after chunk metadata and file contents have already been written to disk, and the assembled file not being deleted upon validation failure. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
The WPForms Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.10.1.1 via the ajax_chunk_upload_finalize function. This is due to the file type validation occurring after chunk metadata and file contents have already been written to disk, and the assembled file not being deleted upon validation failure. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
Active exploitation of CVE-2026-10818 has not been confirmed. The EPSS score is 0.4%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2026-10818 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string 3.1.
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