{"answers":{"affected":"1 open source package ship an affected version, including btd-smart.","exploited":"There is no known exploitation of MAL-2026-4501 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-2026-4501 is a malicious package in btd-smart, published on 19 May 2026."},"fix_prompt":"MAL-2026-4501 is a malicious package: btd-smart (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-2026-4501/ (Markdown: https://insights.sbomify.com/MAL-2026-4501/index.md)","id":"MAL-2026-4501","markdown":"https://insights.sbomify.com/MAL-2026-4501/index.md","name":"MAL-2026-4501","record":{"aliases":["GHSA-m4m6-q4p8-3vjv"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package presents itself as a clone of juliangruber/balanced-match (stolen author identity 'Julian Gruber \u003cmail@juliangruber.com\u003e', verbatim README, identical API renamed btdSmart, placeholder homepage 'github.com/your-org/btd-smart'). Appended to the legitimate code in index.js is an obfuscated block that runs unconditionally when the module is required. A custom string-shuffle decoder reconstructs the identifier 'constructor' (and other strings) without any literal occurrences in the file, retrieves the Function constructor from a string prototype, builds a function from a decoded source body, and invokes it. Before invocation, the code stashes `require` and `module` onto `global` under decoder-produced keys so the Function-built code — which otherwise has no closure scope — gains filesystem, network, and process capabilities. The payload body is opaque (deterministic numerical shuffle with 0x7F-based escape tricks across two nested decoders), executes on every `require('btd-smart')`, and the legitimate balanced-match code above it has no obfuscation, confirming the appended block is purposefully hidden. Combined signals — typosquat with stolen identity, custom obfuscator, dynamic Function eval of a decoded blob at module load, deliberate global-smuggling of require/module — match the documented active-attack shape; no legitimate brace-matching utility needs any of these mechanisms.\n\nAny 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.","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 btd-smart (npm)","id":"MAL-2026-4501","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":"btd-smart","purl":"pkg:npm/btd-smart","source":"MAL-2026-4501"}],"products":null,"published":"2026-05-19","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-2026-4501/"}