CVE-2026-35607

What it is

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, the fix in commit b6a4fb1 ("self-registered users don't get execute perms") stripped Execute permission and Commands from users created via the signup handler. The same fix was not applied to the proxy auth handler. Users auto-created on first successful proxy-auth login are granted execution capabilities from global defaults, even though the signup path was explicitly changed to prevent execution rights from being inherited by automatically provisioned accounts. This vulnerability is fixed in 2.63.1.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-04-07 17:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 10:40 UTC Last updatedMost recent change to the record

Details

Published

2026-04-07 17:16 UTC

Last modified

2026-06-17 10:40 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-269 · Improper privilege management

Record status

Analyzed

Affected

• Filebrowser ≤ 2.63.0

Attack profile CVSS 3.1 · 8.1

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High