CVE-2026-104478

Formwork before 2.3.13 Path Traversal via BackupController Download and Delete

State: Published
Severity: 7.1 High
Published: Oct 2, 2026
Updated: Oct 5, 2026
Reserved: Oct 2, 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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N	VulnCheck
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L	VulnCheck

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
formworkgetformwork	before 2.3.13Affected 2.3.13Not affected

References

Patch Commitpatch
https://github.com/getformwork/formworkproduct
VulnCheck Advisory: Formwork before 2.3.13 Path Traversal via BackupController Download and Deletethird-party-advisory

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