CVE-2026-118235 SimpleForm WordPress Plugin - Unrestricted File Upload

SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications WordPress plugin <= 3.10.2 contains an arbitrary file upload vulnerability caused by missing server-side file key allowlist and improper extension validation in handle_upload, letting unauthenticated attackers upload executable files and achieve remote code execution, exploit requires access to the nonce in public form data.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.74% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unrestricted File Upload
Impact
Remote Code Execution, Unrestricted File Upload
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
31 October 2026
Updated
1 November 2026
Weakness
CWE-434

Vendor fix

Update to the latest version beyond 3.10.2.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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