CVE-2026-101900

Name	CVE-2026-101900
Description	Axios is a promise-based HTTP client for the browser and Node.js. From 1.12.0 until 1.20.0, ResolveConfig reads inherited Symbol.toStringTag, append, and getHeaders properties while resolving FormData headers. A separate same-process prototype-pollution flaw supplies an array or non-plain class instance whose inherited properties make it appear FormData-like; plain objects are blocked. The inherited getHeaders function can return attacker-controlled headers that resolveConfig merges into a fetch adapter request. Attacker-controlled headers can alter authorization, cache, metadata-service, or application-specific request 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-4hqw-qxg8-jxx2
https://github.com/axios/axios/pull/11141
Fixed by: https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a (v1.20.0)