CVE-2026-15627 in GoClaw
Summary
by MITRE • 07/14/2026
A vulnerability was identified in nextlevelbuilder GoClaw up to 3.13.3-beta.3. This vulnerability affects the function handleNavigate of the file pkg/browser/tool.go. Such manipulation of the argument args.targetUrl leads to information disclosure. The attack may be performed from remote. The exploit is publicly available and might be used.
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Analysis
by VulDB Data Team • 07/14/2026
The vulnerability in nextlevelbuilder GoClaw version 3.13.3-beta.3 represents a critical information disclosure flaw within the browser tool component that could enable remote attackers to access sensitive data. This weakness resides specifically in the handleNavigate function located in pkg/browser/tool.go, where improper validation of the args.targetUrl argument creates an avenue for malicious exploitation. The vulnerability's designation as a remote attack vector significantly increases its potential impact since it does not require physical access or local privileges to be exploited. Given that public exploits are available for this flaw, the risk of real-world exploitation is elevated and poses immediate concerns for affected organizations.
The technical nature of this vulnerability aligns with CWE-20, which describes improper input validation as a fundamental weakness in software design where applications fail to properly validate or sanitize user-supplied data before processing it. The flaw manifests when the handleNavigate function processes the targetUrl argument without adequate sanitization or validation measures, potentially allowing attackers to manipulate URL parameters in ways that could expose internal system information, network configurations, or other sensitive data. This type of vulnerability falls under the broader category of input manipulation attacks that can lead to various security consequences including data leakage, privilege escalation, or further exploitation opportunities.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with potential access to internal network structures and system details that could facilitate more sophisticated attacks. Organizations utilizing affected versions of GoClaw may experience unauthorized access to their internal resources, particularly if the application has access to sensitive networks or systems. The remote exploitability means that threat actors can target vulnerable installations from anywhere on the internet without requiring local system access or credentials. This characteristic makes the vulnerability particularly dangerous in environments where the software operates with elevated privileges or has access to critical infrastructure components.
Mitigation strategies for this vulnerability should include immediate deployment of patched versions of GoClaw, as well as network-level protections such as implementing web application firewalls and restricting access to affected systems. Organizations should also consider implementing additional monitoring and logging mechanisms to detect potential exploitation attempts. The remediation process must involve thorough testing of updated software versions to ensure that the patch effectively addresses the underlying validation flaw without introducing new issues. Security teams should conduct comprehensive vulnerability assessments across their infrastructure to identify any other potentially affected systems or applications that might be running vulnerable versions of similar software components. According to ATT&CK framework, this vulnerability maps to T1071.004 for application layer protocol and T1566 for malicious file execution, indicating the need for layered defensive measures including network segmentation, access controls, and continuous monitoring capabilities to prevent exploitation attempts.