CVE-2026-59702 in repomix
Summary
by MITRE • 07/08/2026
repomix contains a server-side request forgery vulnerability in the POST /api/pack endpoint that allows unauthenticated attackers to make arbitrary outbound requests. The endpoint fails to properly validate http://, https://, and file:// URLs before passing them to git clone, enabling attackers to access private network addresses, GCP metadata services, or local filesystem paths.
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Analysis
by VulDB Data Team • 07/08/2026
The repomix server-side request forgery vulnerability in the POST /api/pack endpoint represents a critical security flaw that undermines the integrity of network boundaries and system isolation. This vulnerability allows unauthenticated attackers to exploit the application's trust in user-supplied input by directly manipulating the git clone command execution process. The flaw stems from inadequate validation of URL schemes within the endpoint, specifically failing to properly sanitize http://, https://, and file:// protocols before transmission to the underlying git operations.
The technical implementation of this vulnerability enables attackers to bypass normal network restrictions through the git clone mechanism which inherently trusts the URLs provided by the application layer. When an attacker submits a malicious URL containing protocols like file:// or crafted http:// endpoints pointing to internal services, the system processes these requests without proper authorization checks or network boundary enforcement. This creates a pathway for attackers to access sensitive internal resources that should normally be protected from external access.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential system compromise and lateral movement within affected networks. Attackers can leverage this flaw to probe internal network services, access cloud metadata endpoints such as GCP metadata services, or retrieve local filesystem contents through file:// protocol exploitation. The lack of authentication requirements means any external party can potentially exploit this vulnerability without requiring valid credentials or privileges.
Security controls that should have been implemented include input validation at multiple layers, protocol scheme filtering, and network boundary enforcement mechanisms. The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery vulnerabilities where applications fail to properly validate and sanitize user-supplied URLs before processing them. From an ATT&CK framework perspective, this represents a technique that enables initial access and reconnaissance activities, potentially leading to privilege escalation or data exfiltration through lateral movement within the compromised environment.
Mitigation strategies should focus on implementing strict URL validation that rejects non-whitelisted protocols and ensures proper network isolation between application components and internal services. The system should enforce authentication requirements for all API endpoints and implement outbound request filtering mechanisms. Additionally, network segmentation and firewall rules should be configured to prevent unauthorized access to internal metadata services and sensitive network resources. Regular security testing and input validation reviews should be conducted to identify similar vulnerabilities in other application endpoints that may expose similar attack vectors through improper URL handling or protocol processing mechanisms.