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TI-2026-16105 Aliases CVE-2026-19860GHSA-mqwg-84ff-gqhv

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

Priority LOW 25CWE-73Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed JetFormBuilder — Dynamic Blocks Form Builder (Unknown): 3.6.5.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownJetFormBuilder — Dynamic Blocks Form Builder3.5.6.2 to before 3.6.5.33.6.5.3Patch availableCNA
  • JetFormBuilder — Dynamic Blocks Form Builder VendorUnknown Affected 3.5.6.2 to before 3.6.5.3 Fixed in 3.6.5.3 Patch available CNA

Remediation

  • Fix · CNA JetFormBuilder — Dynamic Blocks Form Builder (Unknown) Fixed in 3.6.5.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-19860
  2. 2026-10-03 Alias added: GHSA-mqwg-84ff-gqhv

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences