CVE-2026-42041

Name	CVE-2026-42041
Description	Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution to silently suppress all HTTP error responses (401, 403, 500, etc.), causing them to be treated as successful responses. This completely bypasses application-level authentication and error handling. The root cause is that validateStatus is the only config property using the mergeDirectKeys merge strategy, which uses JavaScript's in operator — an operator that inherently traverses the prototype chain. When Object.prototype.validateStatus is polluted with () => true, all HTTP status codes are accepted as success. This vulnerability is fixed in 1.15.1 and 0.31.1.
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)
Debian Bugs	1134878

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-axios (PTS)	bullseye	0.21.1+dfsg-1+deb11u1	vulnerable
	bookworm	1.2.1+dfsg-1+deb12u1	vulnerable
	trixie	1.8.4+dfsg-1	vulnerable
	forky	1.15.2-1	fixed
	sid	1.16.0-1	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)	1.15.2-1			1134878

Notes

[trixie] - node-axios <no-dsa> (Minor issue)
[bookworm] - node-axios <no-dsa> (Minor issue)
https://github.com/axios/axios/security/advisories/GHSA-w9j2-pvgh-6h63