CVE-2026-76225 in ArcadeDB
Summary
by MITRE • 08/19/2026
ArcadeDB before 26.8.1 contains a server-side request forgery vulnerability in the OpenCypher LOAD CSV implementation that fails to validate HTTP/HTTPS URLs. Authenticated attackers can craft LOAD CSV queries pointing to internal network addresses or cloud metadata endpoints to make the ArcadeDB server fetch and return sensitive data from restricted services.
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Analysis
by VulDB Data Team • 08/19/2026
The identified security flaw resides within the ArcadeDB database engine, specifically affecting versions prior to 26.8.1. This vulnerability is classified as a Server-Side Request Forgery (SSRF) issue located in the implementation of the OpenCypher LOAD CSV command. The core technical deficiency lies in the lack of rigorous validation for Uniform Resource Locators provided by users when executing this specific query type. When an authenticated user submits a LOAD CSV statement, the database server processes the URL without adequately verifying whether the target address is external or internal. This oversight allows attackers to manipulate the request destination, effectively turning the database server into a proxy that can initiate connections to arbitrary network locations on behalf of the attacker.
The operational impact of this vulnerability is significant because it enables authenticated adversaries to probe and access resources within the local network infrastructure or cloud provider metadata services. By crafting malicious LOAD CSV queries with URLs pointing to internal IP addresses, attackers can discover hidden services, such as administrative interfaces, database ports, or other sensitive applications that are not exposed to the public internet but are accessible from the server's network segment. Furthermore, in cloud environments, this flaw allows access to instance metadata endpoints, which often contain critical authentication credentials, security tokens, and configuration details necessary for further compromise of the underlying infrastructure. The attacker can then retrieve data returned by these internal services directly through the database response mechanism, leading to a severe breach of confidentiality and potential lateral movement within the network.
From a classification perspective, this vulnerability aligns with CWE-918, which describes Server-Side Request Forgery (SSRF) flaws where web applications fetch remote resources without validating user-supplied URLs. Additionally, the exploitation technique maps directly to MITRE ATT&CK tactic T1504, specifically subtechnique T1504.003 for Web Service Discovery, as attackers use this mechanism to enumerate and interact with internal services that are otherwise inaccessible from external networks. The presence of authentication requirements limits the attack surface compared to unauthenticated SSRF vulnerabilities but still poses a critical risk in environments where user accounts may be compromised or shared among multiple tenants.
To mitigate this vulnerability, organizations running ArcadeDB versions before 26.8.1 should immediately upgrade to version 26.8.1 or later, which includes the necessary patches for URL validation logic. In scenarios where upgrading is not immediately feasible, administrators can implement network-level controls such as firewall rules or reverse proxy configurations that restrict outbound connections from the database server to only known and trusted external domains while blocking access to private IP ranges and cloud metadata endpoints like 169.254.169.254 for AWS or similar addresses in other cloud providers. Additionally, enforcing strict input validation on application layers interacting with ArcadeDB can provide an additional layer of defense by sanitizing URLs before they reach the database engine. Regular security audits and monitoring of outbound network traffic from database servers are also recommended to detect any anomalous connection attempts indicative of SSRF exploitation.