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CVE-2026-44492 is a server-side request forgery related proxy-bypass vulnerability in Axios affecting versions prior to 0.32.0 and 1.16.0. The flaw is caused by improper normalization of IPv4-mapped IPv6 addresses in Axios proxy bypass logic, specifically in the shouldBypassProxy handling introduced as part of the fix for CVE-2025-62718. When NO_PROXY contains protected IPv4 destinations such as loopback or metadata service addresses, a request can instead use an IPv4-mapped IPv6 representation that Axios fails to match against the exclusion list. Node.js resolves the mapped IPv6 form to the underlying IPv4 host, so the request is still delivered to the internal destination while being incorrectly routed through the configured proxy. This creates an incomplete fix condition for the earlier vulnerability and exposes internal services that administrators intended to exclude from proxy-mediated access.
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An Axios vulnerability involving improper handling of IPv4-mapped IPv6 addresses, allowing NO_PROXY restrictions to be bypassed so requests to internal IPv4 hosts can still be sent through a configured proxy.
An SSRF proxy-bypass vulnerability in Axios caused by incomplete normalization of IPv4-mapped IPv6 addresses in NO_PROXY handling, allowing requests to internal services such as loopback and cloud metadata endpoints to be routed through a configured proxy.
An Axios proxy bypass vulnerability caused by improper normalization of IPv4-mapped IPv6 addresses in shouldBypassProxy, allowing malicious URLs to bypass proxy exclusion rules and potentially access internal resources such as cloud metadata endpoints.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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