{"answers":{"affected":"1 open source package ship an affected version, including @0xlr/vercel-analytics.","exploited":"There is no known exploitation of MAL-2026-5391 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-2026-5391 is a malicious package in @0xlr/vercel-analytics, published on 9 Jun 2026."},"fix_prompt":"MAL-2026-5391 is a malicious package: @0xlr/vercel-analytics (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-2026-5391/ (Markdown: https://insights.sbomify.com/MAL-2026-5391/index.md)","id":"MAL-2026-5391","markdown":"https://insights.sbomify.com/MAL-2026-5391/index.md","name":"MAL-2026-5391","record":{"aliases":["GHSA-p9mc-hf7g-gjfx"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On `npm install`, postinstall.js enumerates every process.env variable (including credentials such as AWS_*, NPM_TOKEN, GITHUB_TOKEN and other CI tokens) and collects host fingerprint data — hostname, username, homedir, cwd, argv, and platform — then POSTs the JSON payload to https://rytxau88zxh61dw6qz4yn19naeg54vsk.oastify.com/. The destination is a Burp Suite Collaborator (oastify.com) out-of-band interaction host, used here as an attacker-controlled exfiltration sink. The package name `@0xlr/vercel-analytics` impersonates Vercel's `@vercel/analytics`, and the 999.0.0 version plus the self-described `Placeholder reservation` text are the canonical shape of a weaponized dependency-confusion squat designed to override an internal package of the same unscoped name.\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 @0xlr/vercel-analytics (npm)","id":"MAL-2026-5391","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":"@0xlr/vercel-analytics","purl":"pkg:npm/%400xlr/vercel-analytics","source":"MAL-2026-5391"}],"products":null,"published":"2026-06-09","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-2026-5391/"}