CVE-2026-2711 identifies a server-side request forgery vulnerability in the worldquant-miner software developed by zhutoutoutousan, affecting all versions up to 1.0.9. The vulnerability resides in an unspecified function within the ssrf_proxy.py file, part of the URL Handler component. Specifically, the argument make_request can be manipulated by an attacker to force the server to send crafted HTTP requests to arbitrary destinations. This SSRF flaw can be exploited remotely without requiring authentication or user interaction, though the attack complexity is rated high and exploitability difficult, indicating that successful exploitation demands significant effort or specific conditions. The vulnerability was responsibly disclosed early to the project maintainers, but no patch or official response has been issued yet. The CVSS 4.0 base score is 6.3 (medium severity), reflecting the moderate impact on confidentiality, integrity, and availability with limited scope and no privileges required. The SSRF could enable attackers to access internal network services, bypass firewalls, or gather sensitive information, potentially serving as a pivot point for further attacks. No known exploits are currently active in the wild, but public disclosure increases risk. The lack of patch availability necessitates immediate risk mitigation by users of worldquant-miner.

For European organizations deploying worldquant-miner, this SSRF vulnerability poses a risk of unauthorized internal network access and data exposure. Attackers exploiting this flaw could reach internal services that are otherwise protected by perimeter defenses, potentially leading to information leakage, reconnaissance, or lateral movement within the network. This is particularly concerning for organizations in finance, research, or critical infrastructure sectors where sensitive data and internal systems are common. The medium severity and high attack complexity reduce the likelihood of widespread exploitation but do not eliminate the risk, especially from skilled threat actors. The absence of vendor response and patches increases exposure duration. Additionally, organizations relying on this software in cloud or hybrid environments may face amplified risks due to complex network architectures. Overall, the vulnerability could undermine confidentiality and integrity of internal resources, disrupt operations, or facilitate advanced persistent threats if exploited.

Given the lack of an official patch, European organizations should implement the following mitigations: 1) Restrict network egress from servers running worldquant-miner to only trusted destinations using firewall rules or network segmentation to limit SSRF impact. 2) Employ web application firewalls (WAFs) or intrusion detection systems (IDS) with SSRF detection capabilities to monitor and block suspicious outbound requests. 3) Review and harden internal network services to require strong authentication and minimize exposure to unauthorized access. 4) Conduct thorough code audits or apply temporary code-level mitigations if possible, such as input validation or disabling the vulnerable function. 5) Monitor logs for unusual outbound requests originating from the affected component. 6) Plan for rapid patch deployment once the vendor releases a fix. 7) Consider isolating the worldquant-miner instances in dedicated network zones to contain potential exploitation. 8) Educate security teams about the vulnerability and update incident response plans accordingly.