browser-use web-ui up to 3.0.0 Gradio interface run_agent_task path traversal

Summaryinfo

A vulnerability has been found in browser-use web-ui up to 3.0.0 and classified as critical. This affects the function run_agent_task of the component Gradio interface. This manipulation of the argument save_recording_path/save_trace_path/save_agent_history_path/save_download_path causes path traversal. This vulnerability is handled as CVE-2026-82637. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in browser-use web-ui up to 3.0.0. It has been declared as critical. Affected by this vulnerability is the function run_agent_task of the component Gradio interface. The manipulation of the argument save_recording_path/save_trace_path/save_agent_history_path/save_download_path with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. The summary by CVE is:

browser-use web-ui versions 2.0.0 through 3.0.0 fail to validate browser settings paths in run_agent_task, allowing attackers to create directories at arbitrary locations by supplying absolute paths to save_recording_path, save_trace_path, save_agent_history_path, or save_download_path parameters. Attackers can exploit this via the unauthenticated Gradio interface to create directories anywhere the root-running container has write access.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-82637 since 08/30/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/30/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• browser-use

Name

• web-ui

Version

• 3.0

Website

• Product: https://github.com/browser-use/web-ui/

CPE 2.3info

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CPE 2.2info

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