{"answers":{"affected":"1 open source package ship an affected version, including @flipbit2-bb/test-auth-state.","exploited":"There is no known exploitation of MAL-2026-4389 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-2026-4389 is a malicious package in @flipbit2-bb/test-auth-state, published on 20 May 2026."},"fix_prompt":"MAL-2026-4389 is a malicious package: @flipbit2-bb/test-auth-state (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-2026-4389/ (Markdown: https://insights.sbomify.com/MAL-2026-4389/index.md)","id":"MAL-2026-4389","markdown":"https://insights.sbomify.com/MAL-2026-4389/index.md","name":"MAL-2026-4389","record":{"aliases":["GHSA-jrpc-qv6v-wmr6"],"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`, a postinstall script (phone-home.js) collects os.hostname(), os.userInfo().username, process.platform + os.release(), a timestamp, and a package label, then issues an HTTPS GET to https://webhook.site/a536b433-b440-43ec-8399-26059196216e. The package is published under @flipbit2-bb/test-auth-state but the bundled tarball, README, and the phone-home payload's `v` field all identify as `@atlassiansox/cross-flow-support@99.99.99` — a dependency-confusion targeting of Atlassian's internal scope, with version 99.99.99 chosen to win internal-vs-public resolution. Any installer who pulls this package — not just the intended target — leaks host identifiers to the author's webhook.site endpoint. The package has no other functionality.\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 @flipbit2-bb/test-auth-state (npm)","id":"MAL-2026-4389","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":"@flipbit2-bb/test-auth-state","purl":"pkg:npm/%40flipbit2-bb/test-auth-state","source":"MAL-2026-4389"}],"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-2026-4389/"}