CVE-2026-104478

HighCVSS 7.1/10Last modified Oct 5, 2026

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.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 3, 2026
Last modified
Oct 5, 2026
NVD status
Deferred

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CVE-2026-104478: High severity, CVSS 7.1 | Vulnix