CVE-2026-19860

JetFormBuilder 3.5.6.2 - 3.6.5.2 - Admin+ Arbitrary File Deletion via Server-Side Validation Callback

Published Sep 19, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Jetmonsters
Jetmonsters jetformbuilder — Dynamic Blocks Form Builder
Wordpress-extensions
Wordpress-extensions jetformbuilder
Vendors & Products Jetmonsters
Jetmonsters jetformbuilder — Dynamic Blocks Form Builder
Wordpress-extensions
Wordpress-extensions jetformbuilder
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-73
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L'}

Type Values Removed Values Added
Description The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication.
Title JetFormBuilder 3.5.6.2 - 3.6.5.2 - Admin+ Arbitrary File Deletion via Server-Side Validation Callback
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 19, 2026, 1:20 PM
Reserved
Aug 14, 2026, 10:00 AM
Status
Deferred
Published
Sep 19, 2026, 7:16 AM
Modified
Sep 21, 2026, 1:34 PM