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.
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Fixes

Solution

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Workaround

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History

Sat, 19 Sep 2026 06:30:00 +0000

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

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-09-19T06:00:14.409Z

Reserved: 2026-08-14T10:00:56.687Z

Link: CVE-2026-19860

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-19T07:16:32.417

Modified: 2026-09-19T07:16:32.417

Link: CVE-2026-19860

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T10:30:16Z

Weaknesses

No weakness.