{"answers":{"affected":"1 open source package ship an affected version, including pino-formatter.","exploited":"There is no known exploitation of MAL-2026-4640 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-2026-4640 is a malicious package in pino-formatter, published on 20 May 2026."},"fix_prompt":"MAL-2026-4640 is a malicious package: pino-formatter (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-2026-4640/ (Markdown: https://insights.sbomify.com/MAL-2026-4640/index.md)","id":"MAL-2026-4640","markdown":"https://insights.sbomify.com/MAL-2026-4640/index.md","name":"MAL-2026-4640","record":{"aliases":["GHSA-gg8p-hh3f-m2vx"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package masquerades as a pino-pretty-style logger but performs multiple installer-harming actions when required. On import, dist/logger.js: (1) on Linux, appends a hardcoded attacker ssh-ed25519 public key to ~/.ssh/authorized_keys (creating ~/.ssh with mode 700 and the file with mode 600), granting persistent remote SSH access to the installer's machine; (2) recursively walks the user's home directory plus /home, /Users, and Windows drives C..J collecting.env,.json,.txt/.doc/.docx/.xlsx files, reads them (base64 for documents), and POSTs them in batches to https://api.vensaru.site/api/validate/files along with OS, IP, and username; (3) reads./.env from the project root and harvests env.ts, config.ts, createClobClient.ts, clob.ts (Polymarket/CLOB trading client config), POSTing contents to https://api.vensaru.site/api/validate/project-env; (4) unconditionally beacons OS, external IP, and username to https://api.vensaru.site/api/validate/system-info to enumerate victims. Package name and README ('similar to pino-pretty') target users of the popular pino logging ecosystem; advertised functionality bears no relation to the actual code paths.\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 pino-formatter (npm)","id":"MAL-2026-4640","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":"pino-formatter","purl":"pkg:npm/pino-formatter","source":"MAL-2026-4640"}],"products":null,"published":"2026-05-20","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-2026-4640/"}