Axios 1.15.0 Release Patches Critical SSRF Vulnerability in Proxy Handling

The latest update to the widely-used Axios HTTP client library patches a critical security flaw that could enable Server-Side Request Forgery (SSRF) attacks. Version 1.15.0 specifically addresses a bypass in the `no_proxy` hostname normalization, a vulnerability that could allow attackers to manipulate proxy configurations and force a server to make unauthorized internal network requests. This release delivers two critical security patches, marking it as a mandatory update for any backend service or application relying on Axios for network communication.

The vulnerability centers on how Axios handles proxy exceptions. The flaw in the normalization logic could be exploited to circumvent `no_proxy` rules, potentially exposing internal services and APIs that should be inaccessible from external networks. The fix is part of a broader update that also replaces the deprecated `url.parse()` method to resolve Node.js warnings and adds runtime support for Deno and Bun environments. The release includes significant CI hardening and documentation improvements alongside routine dependency updates.

This patch is a high-priority security update for development teams. The SSRF risk is particularly acute for applications that handle user-supplied URLs or interact with internal microservices. Organizations using Axios in their backend servers, especially within containerized or cloud environments with sensitive internal networks, should immediately review and apply this update to mitigate the potential for data exfiltration or internal service compromise. The silent nature of such a bypass makes proactive patching essential for maintaining security posture.