PT-2026-30908 · Unknown · Filebrowser

Kodareef5 · Published 2026-04-07 · Updated 2026-04-09 · CVE-2026-35607

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

File Browser versions prior to 2.63.1 Description: File Browser is a file managing interface. Prior to version 2.63.1, a fix intended to restrict execute permissions for self-registered users was not applied to the proxy authentication handler. This allowed users automatically created on first successful proxy authentication login to inherit execution capabilities from global defaults, violating a security invariant. This issue is an incomplete fix for a previous problem where signup granted execution permissions when default permissions included execution. The vulnerability is related to the application of default settings in the auth/proxy.go createUser() function, where restrictions on Execute permission and Commands were missing compared to the signup handler. API Endpoint: /api/login. Vulnerable Parameters: username. Function Name: createUser(). Recommendations: Upgrade to File Browser version 2.63.1 or later.

Exploit

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

CVE-2026-35607

GHSA-7526-J432-6PPP

Affected Products

Filebrowser

References · 8

• 🔥 https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7526-j432-6ppp · Exploit
• https://github.com/filebrowser/filebrowser/pull/5890 · Patch
• https://osv.dev/vulnerability/GHSA-7526-j432-6ppp · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35607 · Security Note
• https://github.com/filebrowser/filebrowser · Note
• https://twitter.com/infoflowcloud/status/2041570620459119090 · Twitter Post
• https://twitter.com/CVEnew/status/2041569989640294856 · Twitter Post
• https://t.me/CSIRT_italia/3355 · Telegram Post