assertBrowserNavigationAllowed() validated only http:/https: network targets but implicitly allowed other schemes. An authenticated gateway user could navigate browser sessions to file:// URLs and read local files via browser snapshot/extraction flows.
src/browser/navigation-guard.tsfile:// URL (for example file:///etc/passwd).An attacker with valid gateway credentials and browser-tool access can exfiltrate local files readable by the OpenClaw process user (for example config/secrets in that user context).
Reject unsupported navigation schemes and allow only explicitly safe non-network URLs. OpenClaw now blocks non-network schemes (such as file:, data:, and javascript:) while preserving about:blank.
openclaw (npm)<= 2026.2.19-22026.2.21220bd95eff6838234e8b4b711f86d4565e16e401patched_versions is pre-set to the planned next release (2026.2.21) so once npm 2026.2.21 is published, the advisory can be published directly.
OpenClaw thanks @q1uf3ng for reporting.
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.