Openclaw cli: OpenClaw has an authentication bypass in sandbox browser bridge server (CVE-2026-28468)
Description
OpenClaw CLI versions from 2026.1.29-beta.1 up to but not including 2026.2.14 contain an authentication bypass vulnerability in the sandbox browser bridge server. This local-only vulnerability allows any process on the same machine to access the bridge server without authentication, enabling full browser session compromise including tab enumeration, navigation, JavaScript execution, and data exfiltration. The issue is patched in version 2026.2.14. Users should upgrade or disable the sandboxed browser to mitigate the risk.
CVSS v3.1
Score 7.1high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenClaw CLI's sandbox browser bridge server runs a local HTTP interface for browser control endpoints but lacked authentication enforcement in the sandbox initialization path in versions >=2026.1.29-beta.1 and <2026.2.14. This allowed local attackers to bypass authentication and perform actions such as enumerating open tabs, retrieving CDP WebSocket URLs, opening/closing/navigating tabs, executing JavaScript in page contexts, and exfiltrating cookies and session data. The vulnerability is limited to local access (CVSS AV:L) but results in high impact due to full browser session compromise. The issue was fixed in version 2026.2.14 by enforcing authentication on the bridge server and restricting bindings to loopback interfaces.
Potential Impact
A local attacker with access to the same machine can bypass authentication on the sandbox browser bridge server, gaining control over browser tabs and sessions. This includes the ability to execute arbitrary JavaScript in page contexts and exfiltrate sensitive session data such as cookies. The vulnerability does not allow remote exploitation as the bridge server binds only to loopback interfaces. The CVSS score is 7.1 (high severity) reflecting the local attack vector but high confidentiality and integrity impact.
Mitigation Recommendations
Upgrade OpenClaw CLI to version 2026.2.14 or later, which enforces authentication on the sandbox browser bridge server and restricts server bindings to loopback interfaces. Alternatively, disable the sandboxed browser feature by setting 'agents.defaults.sandbox.browser.enabled=false'. These mitigations prevent unauthorized local access to the bridge server and protect browser session integrity.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BREW-openclaw-cli-CVE-2026-28468
- Osv Schema Version
- 1.7.3
- Ecosystems
- ["Homebrew"]
- Cvss Version
- 3.1
Threat ID: 6ac245c712601ec6a3167f02
Added to database: 10/04/2026, 12:25:43 UTC
Last enriched: 10/04/2026, 13:09:22 UTC
Last updated: 10/04/2026, 16:08:37 UTC
Views: 1
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