Vulnerability · Published Aug 30, 2026 · Assigned by VulnCheck
CVE-2026-82640browser-use web-ui 2.0.0 through 3.0.0 Cleartext API Key Storage
Medium 5.5
In plain English
A medium-severity security flaw in web-ui from browser-use. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)<0.1%top 100.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
browser-use web-ui versions 2.0.0 through 3.0.0 write configured LLM API keys to disk in cleartext without encryption or access restrictions. Attackers with read access to the temporary settings directory can recover provider API keys from predictably-named JSON files.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| browser-use | web-ui | 2.0.0 – through 3.0.0 |
Weakness: CWE-312 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- GitHub Issue #736 issue-tracking
- https://github.com/browser-use/web-ui product
- https://github.com/browser-use/web-ui/blob/v3.0.0/src/webui/webui_manager.py technical-description
- VulnCheck Advisory: browser-use web-ui 2.0.0 through 3.0.0 Cleartext API Key Storage third-party-advisory