CVE-2026-63358

high

Description

FileGator accepts arbitrary Unix permission values via the '/chmoditems' API endpoint and passes the value directly to PHP's native 'chmod()' function through 'octdec()' conversion, with no validation. This allows an authenticated user with 'chmod' permission to upgrade their privileges to root.

References

https://www.cve.org/CVERecord?id=CVE-2026-63358

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-202-03.json

https://github.com/filegator/filegator/tree/master

https://github.com/filegator/filegator/commit/4a44ed9a43f84505703dce669c68fb55270c3f2c

https://github.com/filegator/filegator/blob/master/CHANGELOG.md#7142---2026-05-18

Details

Source: Mitre, NVD

Published: 2026-07-21

Updated: 2026-07-22

Risk Information

CVSS v2

Base Score: 6.4

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

Severity: Medium

CVSS v3

Base Score: 7.3

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

Severity: High

CVSS v4

Base Score: 8.4

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00112