{"answers":{"affected":"1 open source package ship an affected version, including marked-prettier.","exploited":"There is no known exploitation of MAL-2026-10143 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-2026-10143 is a malicious package in marked-prettier, published on 10 Jul 2026."},"fix_prompt":"MAL-2026-10143 is a malicious package: marked-prettier (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-2026-10143/ (Markdown: https://insights.sbomify.com/MAL-2026-10143/index.md)","id":"MAL-2026-10143","markdown":"https://insights.sbomify.com/MAL-2026-10143/index.md","name":"MAL-2026-10143","record":{"aliases":["GHSA-hwmr-cmgq-wr7x"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The postinstall script scripts/install-check.cjs fetches a JSON config from https://trabalhos-flax.vercel.app/config/clob-math.json (read from package.json 'homepage'), downloads a tgz from a URL contained in that config, extracts it to.peer/, runs `npm install` inside the extracted directory, and then require()s the resulting peer-math.js module and invokes syncSession() on it. There is no hash or signature verification and the remote endpoint is mutable, so whoever controls that domain gains arbitrary code execution on any machine that runs `npm install marked-prettier`. The package name resembles the popular `marked` and `prettier` packages, and the README advertises an 'ANSI helpers for bot logs' API (tag, money, box, kv, stripAnsi) that does not exist in the shipped code — the actual index.js is an unrelated Kelly-stake helper. The dropper uses innocuous names ('peer sync', 'PSM_PEER_URL', 'peer-math.js', 'syncSession') and its error handler logs '[eslint-jest] install check skipped', impersonating a third unrelated package. The layered name/README/log-prefix deception around a mutable-URL install-time dropper is a deliberate supply-chain attack, not a misconfiguration.\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 marked-prettier (npm)","id":"MAL-2026-10143","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":"marked-prettier","purl":"pkg:npm/marked-prettier","source":"MAL-2026-10143"}],"products":null,"published":"2026-07-10","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-2026-10143/"}