CVE-2022-0086 in uppy
Summary
by MITRE • 01/04/2022
uppy is vulnerable to Server-Side Request Forgery (SSRF)
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Analysis
by VulDB Data Team • 12/22/2025
The vulnerability identified as CVE-2022-0086 affects the uppy library, which is a modern file upload library used in web applications for handling file transfers. This particular flaw represents a server-side request forgery vulnerability that allows attackers to manipulate the library's behavior and potentially access internal systems or resources that should remain protected. The issue stems from insufficient validation of URLs or endpoints that the library may attempt to access during file upload operations, creating a pathway for malicious actors to exploit the system's trust relationships.
The technical implementation of this vulnerability occurs when uppy processes file upload requests and makes HTTP requests to external endpoints without proper sanitization or validation of the target URLs. An attacker can craft malicious input that causes the library to initiate requests to internal network resources, external malicious servers, or sensitive endpoints that the application should not be able to access. This flaw typically manifests when the library accepts user-provided URLs or endpoint configurations that are then used in subsequent HTTP requests without adequate filtering or authorization checks. The vulnerability falls under CWE-918, which specifically addresses server-side request forgery vulnerabilities where applications make unintended requests to internal or external resources based on user input.
The operational impact of this vulnerability extends beyond simple data exfiltration, as it can enable attackers to perform reconnaissance on internal network infrastructure, access sensitive configuration files, or even escalate privileges within the system. In environments where uppy is integrated into web applications, an attacker could potentially access internal APIs, databases, or other services that are normally protected by network segmentation. The vulnerability's exploitation risk is heightened when the library operates with elevated privileges or when the application hosting uppy has access to sensitive internal resources. This type of vulnerability aligns with ATT&CK technique T1071.004, which covers application layer protocol: DNS, and can be leveraged for broader attack chains involving lateral movement and privilege escalation.
Mitigation strategies for CVE-2022-0086 should focus on implementing strict input validation and URL sanitization within the uppy library's configuration. Organizations should ensure that all user-provided URLs or endpoints are validated against a whitelist of approved domains or IP addresses, and that the library operates with minimal necessary privileges. Network-level protections including firewalls and access control lists should be implemented to prevent outbound requests to internal resources. Additionally, the library should be updated to versions that include proper validation mechanisms, and security monitoring should be enhanced to detect unusual outbound network requests that could indicate exploitation attempts. The implementation of proper logging and alerting for file upload operations can help identify potential exploitation activities before they result in significant damage to the system or organization's security posture.