CVE-2026-104478: Getformwork Formwork

High severity, CVSS 7.1. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Getformwork Formwork: before 2.3.13 (fixed in 2.3.13)

Published 2026-10-03. Last modified 2026-10-05.