MAL-2026-5529 Malicious code in v018-axios-cdntest (npm)
- Package
- v018-axios-cdntest
- Registry
- npm
What is MAL-2026-5529?
MAL-2026-5529 is a malicious package in v018-axios-cdntest, published on 10 Jun 2026.
Official description
Package impersonates axios v0.18.0 (index.js carries the genuine axios v0.18.0 | (c) 2018 by Matt Zabriskie header and sets window.axios={}, window.__cdn_package='[email protected]') but ships two malicious payloads. (1) index.js appends an IIFE that reads document.cookie and sends it via XMLHttpRequest GET to a hardcoded webhook.site endpoint (https://webhook.site/ef6e7978-f936-4664-b3ff-296a250e1735?c=<cookies>), firing on the page load event so any consumer loading this script via CDN or bundle leaks all accessible cookies to the attacker. (2) Sibling xmr-min.js is an in-browser Monero cryptojacker that constructs a Web Worker from a Blob and uses eval on dynamic JS to mine to wallet 44AFFq5kSiGBoZ4NMDwYtN18obc8AemS33DBLWs3H7otXft3XjrpDtQGv7SqSsaBYBb98uNbr2VBBEt7f2wfn3RVGQBEP3A via pool.supportxmr.com:4444. The package is intended to be loaded through jsdelivr (cdn.jsdelivr.net/npm/v018-axios-cdntest@.../xmr-min.js), so any site embedding it leaks user cookies and burns visitors' CPU. The package's own description self-labels these payloads.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
What should I do about MAL-2026-5529?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-cw6g-r53q-23c2.