{"answers":{"affected":"1 open source package ship an affected version, including test-ajs.","exploited":"There is no known exploitation of MAL-2026-4689 in the wild and no public exploit code.","fix":"Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.","what":"MAL-2026-4689 is a malicious package in test-ajs, published on 26 May 2026."},"fix_prompt":"MAL-2026-4689 is a malicious package: test-ajs (npm). Every version was published to cause harm.\n\nTask:\n1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.\n2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.\n3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.\n4. If the package is not used anywhere, say so and change nothing.\n\nReference: https://insights.sbomify.com/MAL-2026-4689/ (Markdown: https://insights.sbomify.com/MAL-2026-4689/index.md)","id":"MAL-2026-4689","markdown":"https://insights.sbomify.com/MAL-2026-4689/index.md","name":"MAL-2026-4689","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"test-ajs advertises a ~2KB React/Recoil helper (dist/cjs/index.js, 2169 bytes, exporting Roid/inject glue over react+recoil) but ships a ~976KB Linux ELF at bin/install-deps and runs it unconditionally via package.json's preinstall hook (\"preinstall\": \"./bin/install-deps\"). The package declares no native build tooling — no binding.gyp, no C/C++ or Rust source, no node-gyp / prebuild-install / cmake-js — so there is no legitimate reason for a native binary to exist, let alone execute on every npm install. The binary's embedded strings indicate HTTP client behavior (HTTP/1.1, POST, DELETE, https://), modern asymmetric crypto (RSA_PKCS1_, Ed25519, MLKEM, X448), a GitHub API version pin (2022-11-28), and host-environment references (USERPROFILE, PATH) — the fingerprint of an outbound-network agent with credential/key handling, completely unrelated to a 2KB React binding. The cover-story name (\"install-deps\") is misleading: the JavaScript surface contains no dependency-resolution logic the binary could be assisting. Any developer or CI runner that installs this package executes attacker-controlled native code with the installer's privileges before any review of package contents is possible.\n\nThis package was compromised as part of the IronWorm campaign. This campaign executes a malicious binary payload during installation via a preinstall hook. The payload is a Rust-built infostealer that targets developer environments, scanning for and harvesting credentials related to cloud providers, object storage, databases, source-control, package registries, and AI developer tools. It also targets cryptocurrency wallets, specifically injecting a malicious JavaScript hook into the Exodus desktop wallet to capture passwords and recovery phrases. Furthermore, the malware exhibits worm-like behavior by stealing GitHub and NPM credentials to push malicious updates to the victim's repositories and publish trojanized packages, and it uses an eBPF-based kernel rootkit to hide its processes and network connections on Linux systems.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Malicious code in test-ajs (npm)","id":"MAL-2026-4689","indexable":true,"kev":null,"kind":"malicious","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":[],"last_affected":[],"package":"test-ajs","purl":"pkg:npm/test-ajs","source":"MAL-2026-4689"}],"products":null,"published":"2026-05-26","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"OpenSSF Malicious Packages","prefix":"MAL"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/MAL-2026-4689/"}