NEX-Forms <= 9.2.3 - Authenticated (Admin+) Arbitrary File Deletion via Path Traversal via 'location' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Nex Forms – Ultimate Form Builder – Lite plugin for WordPress is vulnerable to arbitrary file deletion via path traversal in versions up to, and including, 9.2.3. This is due to the delete_file() AJAX handler retrieving a file path from the database and passing it directly to unlink() with no validation (no realpath(), basename(), or allowlist check), combined with the insert_record() AJAX handler that lets the same authenticated user store an arbitrary value in the target 'location' column (wp_kses() only strips HTML tags and does not neutralize path traversal or absolute paths). This makes it possible for authenticated attackers, with admin-level access and above, to delete arbitrary files on the affected site's server, including wp-config. When the plugin's user-level option is configured to something else, this may be exploitable with lower privileges.
Why it matters now
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15450
- 2026-10-03 Alias added: GHSA-2446-gfm3-96v2
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/bb5c8cb3-df67-4f2c-869a-48e34f5619ff?source=cve
- https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L805
- https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L269
- https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder/tags/9.2.3/includes/classes/class.db.php#L273
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3625615%40nex-forms-express-wp-form-builder&new=3625615%40nex-forms-express-wp-form-builder
More webaways vulnerabilities
- TI-2023-01989 NEX-Forms < 8.4 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
- TI-2023-00416 NEX-Forms < 8.4.4 - Authenticated Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2023-00257 NEX-Forms < 8.3.3 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2022-02901 NEX-Forms < 7.9.7 - Authenticated SQLi CVSS 3.1HIGH 8.8
- TI-2015-07829 The nex-forms-express-wp-form-builder plugin before 4.6.1 for WordPress has SQL injection… CVSS 3.1CRITICAL 9.8
- TI-2026-01610 Authorization bypass in webaways NEX-Forms – Ultimate Forms Plugin for WordPress CVSS 3.1HIGH 7.5
Sources
- CVE-2026-15450 · CVE Program
- CVE-2026-15450 · NVD
- FIRST EPSS
- GHSA-2446-gfm3-96v2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences