{"answers":{"affected":"1 open source package ship an affected version, including cb-wallet-http.","exploited":"There is no known exploitation of MAL-2026-4507 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-2026-4507 is a malicious package in cb-wallet-http, published on 20 May 2026."},"fix_prompt":"MAL-2026-4507 is a malicious package: cb-wallet-http (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-2026-4507/ (Markdown: https://insights.sbomify.com/MAL-2026-4507/index.md)","id":"MAL-2026-4507","markdown":"https://insights.sbomify.com/MAL-2026-4507/index.md","name":"MAL-2026-4507","record":{"aliases":["GHSA-mv3f-92cr-83h7"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package name mimics Coinbase's internal `cb-wallet-*` namespace to capture dependency-confusion resolutions. On `npm install` (postinstall.js) and on `require('cb-wallet-http')` (index.js), the package issues an HTTPS GET to the hardcoded endpoint `https://icy-cell-fb53.gh0stfqce25.workers.dev/poc`, transmitting the package name and Node.js runtime version to a third-party Cloudflare Workers domain registered under a personal handle (`gh0stfqce25.workers.dev`) unrelated to Coinbase. The package's own description self-identifies as a 'RESERVED PLACEHOLDER — coordinated security-research namespace claim' with the repository `github.com/gh0stfqce/npm-namespace-claims`. Regardless of the author's stated research intent, any organization that installs this package via misconfigured registry resolution leaks host/build-topology identifiers to the operator of the worker without consent, fingerprinting which builds are vulnerable to dependency confusion against Coinbase's namespace.\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 cb-wallet-http (npm)","id":"MAL-2026-4507","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":"cb-wallet-http","purl":"pkg:npm/cb-wallet-http","source":"MAL-2026-4507"}],"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-2026-4507/"}