CVE-2026-104478
Formwork before 2.3.13 Path Traversal via BackupController Download and Delete
Description
Formwork before 2.3.13 contains a path traversal vulnerability in BackupController that allows authenticated panel users to read or delete arbitrary files. Attackers with backup download or delete permission can supply a base64-encoded backslash-separated traversal payload that bypasses PHP basename on Linux to access files outside the backup directory.
INFO
Published Date :
Oct. 2, 2026, 11:28 p.m.
Last Modified :
Oct. 2, 2026, 11:28 p.m.
Remotely Exploit :
Yes !
Source :
VulnCheck
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 |
Solution
- Update Formwork to version 2.3.13 or later.
- Restrict backup download and delete permissions.
- Validate all user inputs for traversal attempts.
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CVE-2026-104478 vulnerability anywhere in the article.