CVE-2026-101906

Name	CVE-2026-101906
Description	Axios is a promise-based HTTP client for the browser and Node.js. From 1.15.0 until 1.20.0, Axios shouldBypassProxy applies a quadratic trailing-dot regular expression to redirect hostnames. HTTP_PROXY or HTTPS_PROXY is configured, NO_PROXY or no_proxy is non-empty, redirects are followed, and a crafted redirect Location contains many dots followed by a non-dot character. Hostname.replace(/.+$/, '') backtracks quadratically while processing the crafted redirect hostname. Synchronous regular-expression processing can block the Node.js event loop and cause denial of service. 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	fixed
	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	bookworm	(not affected)
node-axios	source	(unstable)	1.20.0-1

Notes

[trixie] - node-axios <no-dsa> (Minor issue)
[bookworm] - node-axios <not-affected> (Vulnerable code not present, shouldBypassProxy() introduced in 1.15.0)
https://github.com/axios/axios/security/advisories/GHSA-mghh-pgcx-3jjj
https://github.com/axios/axios/pull/11141
Fixed by: https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a (v1.20.0)