Super Forms <= 6.3.316 - Authenticated (Subscriber+) Arbitrary File/Directory Deletion via 'subdir' / 'path' Parameter

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-15983
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-01 09:17:09 UTC
Updated2026-10-03 16:16:36 UTC
DescriptionThe Super Forms – Drag & Drop Form Builder plugin for WordPress is vulnerable to Arbitrary File/Directory Deletion in all versions up to, and including, 6.3.316. This is due to the `super_save_form` AJAX handler performing no capability check — allowing Subscriber-level authenticated users to create or modify Super Forms and enable the `file_upload_submission_delete` setting — combined with the `super_submit_form` handler's `submit_form` function passing the attacker-controlled `files[].subdir` value from `$_POST['data']` directly into `SUPER_Common::delete_dir()` without sanitization, and a trivially bypassed `ABSPATH` guard that a `subdir` value of `wp-config.php` defeats because `dirname(realpath(ABSPATH . $subdir))` resolves to the WordPress root while the naive `ABSPATH !== $dir` string check fails to match due to a trailing-slash mismatch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to recursively delete arbitrary files and directories on the server, up to and including the entire WordPress installation, resulting in full site takedown and potential remote code execution if critical files such as `wp-config.php` are removed and the site is subsequently re-installed by another party.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS: 0.005380000 probability, percentile 0.433100000 (date 2026-10-05)

Problem Types: CWE-73 | CWE-73 CWE-73 External Control of File Name or Path

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WebRehab Super Forms Drag Drop Form Builder affected 6.3.316 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/25704473-1200-49df-aa16-9a955... [email protected] www.wordfence.com
github.com/RensTillmann/super-forms/pull/205 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: d.v4n_s3c (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-16T17:31:50.000ZVendor Notified
CNA2026-09-30T20:15:01.000ZDisclosed

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