CVE-2026-104478

EUVD-2026-91854
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.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 26.52%
Common Weakness Enumeration
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