What’s Vulnerable › Vulnerabilities

CVE-2025-52900: File Browser has Insecure File Permissions

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-26 · updated 2026-06-17
• Weakness: CWE-276

Description

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. The file access permissions for files uploaded to or created from File Browser are never explicitly set by the application. The same is true for the database used by File Browser. On standard servers using File Browser prior to version 2.33.7 where the umask configuration has not been hardened before, this makes all the stated files readable by any operating system account. Version 2.33.7 fixes the issue.

Affected products

• filebrowser: before 2.33.7 — fixed in 2.33.7

How to fix

Upgrade to a fixed version: filebrowser 2.33.7. Check the vendor advisory for mitigations.

References

• https://github.com/filebrowser/filebrowser/commit/ca86f916216620365c0f81629c0934ce02574d76
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-jj2r-455p-5gvf

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