What’s Vulnerable › Vulnerabilities
CVE-2026-19860: JetFormBuilder 3.5.6.2 - 3.6.5.2 - Admin+ Arbitrary File Deletion via Server-Side Validation Callback
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-19 · updated 2026-09-21
- Weakness: CWE-73
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.
Affected products
- JetFormBuilder — Dynamic Blocks Form Builder: from 3.5.6.2 before 3.6.5.3 — fixed in 3.6.5.3
How to fix
Upgrade to a fixed version: JetFormBuilder — Dynamic Blocks Form Builder 3.6.5.3. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-19860 or the next vulnerability affects your stack