CVE-2026-104478

high

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.

References

https://www.vulncheck.com/advisories/formwork-before-2.3.13-path-traversal-via-backupcontroller-download-and-delete

https://github.com/getformwork/formwork/commit/89e7821a6fcee89474cd401b3dde0c1dccb0687f

https://github.com/getformwork/formwork

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91854

Details

Source: Mitre, NVD

Published: 2026-10-03

Updated: 2026-10-05

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:P

Severity: High

CVSS v3

Base Score: 7.1

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

Severity: High

CVSS v4

Base Score: 7.1

Vector: 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

Severity: High

EPSS

EPSS: 0.00352