CVE-2025-52900: filebrowser Permission Flaw

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.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

Affected Products

Vendor	Product	Versions
filebrowser	filebrowser	< 2.33.7

References

Advisories & Patches

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

Exploits

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

Frequently Asked Questions

What is CVE-2025-52900? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-52900? +

CVE-2025-52900 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-52900? +

CVE-2025-52900 affects products from filebrowser, specifically: filebrowser. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-52900? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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