{"answers":{"affected":"1 open source package ship an affected version, including bi-core-bi-core-core.","exploited":"There is no known exploitation of MAL-2026-12829 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-2026-12829 is a malicious package in bi-core-bi-core-core, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12829 is a malicious package: bi-core-bi-core-core (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-2026-12829/ (Markdown: https://insights.sbomify.com/MAL-2026-12829/index.md)","id":"MAL-2026-12829","markdown":"https://insights.sbomify.com/MAL-2026-12829/index.md","name":"MAL-2026-12829","record":{"aliases":["GHSA-597m-xm3m-3fx5"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require() of the package, index.js triggers _compat.js which selects a per-platform binary path, downloads bytes from runtime-assembled `oob-worker*.workers.dev` Cloudflare Workers hosts (with a DNS TXT fallback via `*.dl.wel1.ru` subdomains), writes them to /tmp or %TEMP% under disguised names (`.cache_\u003chex\u003e`, `dotnet_diag_\u003chex\u003e.exe`), chmods 0755, and spawns them detached via `/bin/sh -c` on Unix or `cmd.exe /c start /b` on Windows. Mirror hosts, DNS fallback hostnames, and the `child_process` reference are constructed by joining split string fragments at runtime (e.g. `[\"oob-work\",\"er.cf100-41\",...].join('')`, `require(\"child_\" + \"process\")`) to defeat static string scans. The package presents itself as a trivial base framework module — index.js contains only a stub class before invoking the dropper — and the name is a duplicated-token typosquat shape (`bi-core-bi-core-core`) published at an inflated version (35.8.5) with no legitimate functionality.\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 bi-core-bi-core-core (npm)","id":"MAL-2026-12829","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":["0"],"last_affected":[],"package":"bi-core-bi-core-core","purl":"pkg:npm/bi-core-bi-core-core","source":"MAL-2026-12829"}],"products":null,"published":"2026-08-05","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-2026-12829/"}