Bug 2487938 (CVE-2026-44492) - CVE-2026-44492 axios: Axios: Proxy bypass via IPv4-mapped IPv6 address non-normalization
Summary: CVE-2026-44492 axios: Axios: Proxy bypass via IPv4-mapped IPv6 address non-no...
Keywords:
Status: NEW
Alias: CVE-2026-44492
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
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Whiteboard:
Depends On: 2488211 2488212 2488213 2488214 2488215 2488216 2488217 2488218 2488219 2488220 2488221 2488223 2488224
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-11 17:01 UTC by OSIDB Bzimport
Modified: 2026-06-12 01:10 UTC (History)
120 users (show)

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Description OSIDB Bzimport 2026-06-11 17:01:19 UTC 
Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, Axios does not normalise IPv4-mapped IPv6 addresses. When NO_PROXY lists an IPv4 address such as 127.0.0.1 or 169.254.169.254, a request URL using the IPv4-mapped IPv6 form (::ffff:7f00:1, ::ffff:a9fe:a9fe) still routes through the configured proxy. Node.js resolves these addresses to the underlying IPv4 host, so the request reaches the internal service via the proxy rather than being blocked. This vulnerability is fixed in 0.32.0 and 1.16.0.
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