Authenticated file deletion via stored path traversal
Published Aug 1, 2026 · Updated Aug 1, 2026
Path traversal in Basix NEX-Forms 9.2.3 and earlier allows remote authenticated users to delete arbitrary server files through AJAX. The insert_record() handler stores an attacker-controlled location after HTML-only filtering, and delete_file() passes it directly to unlink() without path validation. Administrator access is required by the default user-level setting; lowering that setting exposes the same deletion path to less-privileged accounts, including deletion of wp-config.php.
Summary
What happened
Path traversal in Basix NEX-Forms 9.2.3 and earlier allows remote authenticated users to delete arbitrary server files through AJAX. The insert_record() handler stores an attacker-controlled location after HTML-only filtering, and delete_file() passes it directly to unlink() without path validation. Administrator access is required by the default user-level setting; lowering that setting exposes the same deletion path to less-privileged accounts, including deletion of wp-config.php.
The record
- CVE
- CVE-2026-15450
- Published
- Aug 1, 2026
- Updated
- Aug 1, 2026
- Vendor
- Basix
- Product
- NEX-Forms
- Classifications
- T1485
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 1, 2026CVE publishedPublication date reported by the CVE source.
- Aug 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=9.2.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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