{"answers":{"affected":"1 open source package ship an affected version, including data-fetching-client.","exploited":"There is no known exploitation of MAL-2026-6411 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-2026-6411 is a malicious package in data-fetching-client, published on 25 Jun 2026."},"fix_prompt":"MAL-2026-6411 is a malicious package: data-fetching-client (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-2026-6411/ (Markdown: https://insights.sbomify.com/MAL-2026-6411/index.md)","id":"MAL-2026-6411","markdown":"https://insights.sbomify.com/MAL-2026-6411/index.md","name":"MAL-2026-6411","record":{"aliases":["GHSA-j99m-jc5r-9w58"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package self-identifies in its package.json description as a bug-bounty dependency-confusion proof-of-concept against an internal package name of the same identifier. On install, postinstall.js reads os.hostname() and the current timestamp and prints them to local stdout with a '[hubspot-poc]' marker; no network call is made and no data leaves the host. The harm in this version is limited to demonstrating that the public-registry package would resolve in place of the targeted internal package in a misconfigured build environment. The shape is a namespace-confusion publication: any consumer whose registry resolution is misconfigured would execute the author's postinstall code, and a non-PoC successor version could trivially replace the local log with arbitrary install-time behavior.\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 data-fetching-client (npm)","id":"MAL-2026-6411","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":"data-fetching-client","purl":"pkg:npm/data-fetching-client","source":"MAL-2026-6411"}],"products":null,"published":"2026-06-25","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-2026-6411/"}