CVE-2026-101908

Name	CVE-2026-101908
Description	Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers so fetchOptions.headers resolves through inheritance. The inherited fetchOptions.headers value overrides the sanitized Request headers through the second argument to fetch after Request construction. Attacker-controlled request headers can alter authorization, caching, metadata-service access, or application-specific behavior. This issue is fixed in version 1.20.0.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-axios (PTS)	bookworm	1.2.1+dfsg-1+deb12u1	vulnerable
	trixie	1.8.4+dfsg-1	vulnerable
	forky, sid	1.20.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-axios	source	(unstable)	1.20.0-1

Notes

https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8
https://github.com/axios/axios/pull/11141
Fixed by: https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a (v1.20.0)