CVE-2025-47241 Browser Use allows bypassing `allowed_domains` by putting a decoy domain in http auth username portion of a URL
Attackers can bypass allowed_domains restrictions in browser-use by exploiting URL parsing flaws involving userinfo in the authority component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-47241?
CVE-2025-47241 is a medium-severity vulnerability in browser-use, published on 3 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In browser-use (aka Browser Use) before 0.1.45, URL parsing of allowed_domains is mishandled because userinfo can be placed in the authority component.
Weakness: CWE-647
Which versions are affected by CVE-2025-47241?
3 open source packages ship an affected version, including browser-use.
| Package | Affected | Fixed in |
|---|---|---|
browser-use PyPI | All versions | 0.1.45 |
browser-use PyPI | All versions | 0.1.45 |
browser-use PyPI | All versions | 0.1.45 |
How do I fix CVE-2025-47241?
Upgrade browser-use to 0.1.45 or later.
Is CVE-2025-47241 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-47241 exists.
Sources
Also known as GHSA-x39x-9qw5-ghrf, PYSEC-2026-300.