CVE-2026-104478

Formwork before 2.3.13 Path Traversal via BackupController Download and Delete

HIGH
7.1
CVSS Score
Published: October 2, 2026 at 11:28 PM UTC
Updated: October 5, 2026 at 04:17 PM UTC
2 products affected across 2 vendorsFormworkFormwork

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.3.13
Affected range stops below 2.3.13, so it looks safe — our inference, not a vendor statement
v < 2.3.13
Vendor states this is fixed in 2.3.13 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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