CVE-2026-105049 in Attu
Summary
by MITRE • 10/03/2026
Zilliz Attu before 3.0.0 has a Playground feature that does not require authentication for proxying arbitrary HTTP and HTTPS requests to URLs on the public internet.
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Analysis
by VulDB Data Team • 10/03/2026
The vulnerability identified in Zilliz Attu prior to version 3.0.0 represents a critical security misconfiguration within its integrated development environment, specifically affecting the Playground functionality. This feature is designed to assist users in testing queries and interactions with vector databases; however, it fails to enforce authentication mechanisms when handling outbound network requests. Consequently, any user or automated script that can access the Attu interface without valid credentials retains the ability to utilize this proxying capability. The core technical flaw lies in the absence of an authorization check before initiating HTTP or HTTPS connections to external destinations. This oversight allows unauthenticated actors to leverage the application as a open relay, effectively bypassing network perimeter defenses and identity verification protocols that would normally restrict such operations.
From a technical perspective, this vulnerability enables attackers to perform arbitrary outbound requests to any URL on the public internet. The impact extends beyond simple data exfiltration or reconnaissance. Attackers can use this proxy to scan internal networks if Attu is deployed in an environment where it has access to private resources, although the description specifies public internet targeting. More critically, this functionality facilitates Server-Side Request Forgery (SSRF) attacks against external services that may be vulnerable to specific request patterns or lack robust input validation themselves. It also allows for bypassing IP-based restrictions on target systems by routing traffic through a trusted internal application endpoint. This can lead to unauthorized access to sensitive APIs, exploitation of cloud metadata endpoints if the proxy is misconfigured in certain environments, and potential data leakage via outbound channels that are not monitored or logged adequately.
The operational impact of this vulnerability is significant for organizations relying on Zilliz Attu for database management and development tasks. Unauthenticated users can exploit the Playground to conduct port scanning, service enumeration, and credential stuffing attacks against external services by making repeated requests with varying parameters. Furthermore, it creates a vector for data exfiltration where sensitive information processed within the application context could be sent to attacker-controlled servers under the guise of legitimate proxy traffic. This undermines the principle of least privilege and compromises the integrity of the development environment. In cloud-native deployments, this flaw can lead to increased costs due to excessive outbound bandwidth usage or compromise internal infrastructure if the Attu instance has broader network access than intended.
To mitigate this risk, organizations must upgrade Zilliz Attu to version 3.0.0 or later where these authentication gaps have been addressed. Until an upgrade is feasible, it is imperative to restrict direct internet-facing exposure of the Attu interface through robust firewall rules and reverse proxy configurations that enforce strict access control lists. Network segmentation should be implemented to ensure that even if unauthenticated users gain access, their ability to make arbitrary outbound connections is limited by network-level policies. Additionally, monitoring tools should be configured to detect unusual patterns of outbound HTTP or HTTPS requests originating from the Attu service account, particularly those targeting non-standard ports or known malicious IP ranges. Regular security audits and penetration testing focused on authentication bypasses in development tools are recommended to identify similar misconfigurations across other components of the infrastructure. This vulnerability aligns with CWE-287 Improper Authentication and is often associated with ATT&CK techniques related to Command and Control via Application Layer Protocol, highlighting the need for strict identity verification in all interactive features that interact with external networks.