GHSA-x39x-9qw5-ghrf: browser-use (CVE-2025-47241)

Package	Ecosystem	Affected	Fixed in
browser-use	PyPI	<0.1.45	0.1.45

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The browser-use PyPI package, versions before 0.1.45, has an allowed_domains restriction that can be bypassed. The domain check splits on colons, so a URL with a whitelisted domain placed in the username portion of basic-auth credentials passes the check while the request actually goes to a different host. An attacker who can supply URLs to the agent could reach localhost or internal services that the allowlist was meant to block, and browse outside the permitted domains. Upgrade browser-use to version 0.1.45 or later, which contains the fix.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.0	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N	CNA (mitre)

CISA KEV Not listed.
EPSS 0.0046, the 40th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:07 UTC First seen by agentprime
31 Oct 2026, 14:07 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.