What’s Vulnerable › Vulnerabilities

CVE-2026-104478: Formwork before 2.3.13 Path Traversal via BackupController Download and Delete

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-03 · updated 2026-10-05
• Weakness: CWE-22

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 products

• getformwork formwork: before 2.3.13 — fixed in 2.3.13

How to fix

Upgrade to a fixed version: getformwork formwork 2.3.13. Check the vendor advisory for mitigations.

References

• https://github.com/getformwork/formwork
• https://github.com/getformwork/formwork/commit/89e7821a6fcee89474cd401b3dde0c1dccb0687f
• https://www.vulncheck.com/advisories/formwork-before-2.3.13-path-traversal-via-backupcontroller-download-and-delete

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