{"answers":{"affected":"1 open source package ship an affected version, including weavedb-exm-sdk-web.","exploited":"There is no known exploitation of MAL-2026-4719 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-2026-4719 is a malicious package in weavedb-exm-sdk-web, published on 26 May 2026."},"fix_prompt":"MAL-2026-4719 is a malicious package: weavedb-exm-sdk-web (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-2026-4719/ (Markdown: https://insights.sbomify.com/MAL-2026-4719/index.md)","id":"MAL-2026-4719","markdown":"https://insights.sbomify.com/MAL-2026-4719/index.md","name":"MAL-2026-4719","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"package.json declares `\"preinstall\": \"./bin/install-deps\"`, which runs a 976KB UPX-packed Linux x86 ELF binary on every `npm install`. The package self-describes as a pure-JavaScript 'Web Client for WeaveDB' — its index.js is a ~60-line HTTP wrapper around `https://${functionId}.exm.run` — with no native build step, no shipped C/C++/Rust source, and no purpose-aligned reason to ship or execute a Linux binary at install time. The binary carries the UPX runtime-unpacker signature (`http://upx.sf.net` at offset ~4574) so its actual payload is compressed and not statically reviewable; visible string fragments reference PTRACE (process tracing), libbpf (kernel packet filtering), HTTP client primitives, and GitHub API headers — capabilities entirely unrelated to a WeaveDB JS HTTP client. There is no hash/signature verification, no version pinning, no documentation of the binary's presence in the README, and the file is staged under a generic 'install-deps' cover name. Installer impact: any `npm install weavedb-exm-sdk-web` on a Linux host (developer machines, CI runners) executes attacker-controlled, process-privileged native code with capabilities (ptrace, eBPF) suitable for credential theft, process injection, and host-level surveillance, before any application code is loaded.\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 weavedb-exm-sdk-web (npm)","id":"MAL-2026-4719","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":"weavedb-exm-sdk-web","purl":"pkg:npm/weavedb-exm-sdk-web","source":"MAL-2026-4719"}],"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-2026-4719/"}