{"answers":{"affected":"1 open source package ship an affected version, including @solana-labs/web3-js.","exploited":"There is no known exploitation of MAL-2026-5363 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-2026-5363 is a malicious package in @solana-labs/web3-js, published on 7 Jun 2026."},"fix_prompt":"MAL-2026-5363 is a malicious package: @solana-labs/web3-js (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-2026-5363/ (Markdown: https://insights.sbomify.com/MAL-2026-5363/index.md)","id":"MAL-2026-5363","markdown":"https://insights.sbomify.com/MAL-2026-5363/index.md","name":"MAL-2026-5363","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package name `@solana-labs/web3-js` impersonates the legitimate `@solana/web3.js` and `index.js` simply re-exports the real package as cover. The `postinstall` hook in package.json runs `node install.js`, which executes a full attack chain on every install: (1) XOR-decodes a hardcoded Telegram bot token and chat id; (2) `collect()` reads installer secrets from `~/.ssh/id_rsa`, `~/.aws/credentials`, `~/.config/solana/id.json`, `~/.solana/id.json`, project and system `.env` files (`/root/.env`, `/home/node/.env`, `/app/.env`), and scrapes `process.env` for variables matching `/KEY|SECRET|MNEMONIC|PRIVATE|TOKEN|AWS|NPM|GITHUB/i`; (3) `exfilNow()` POSTs the harvested secrets in chunks to `api.telegram.org/bot\u003ctoken\u003e/sendMessage`; (4) writes `/tmp/.cron-tmp` and pipes it through `crontab -` to install an `@reboot sleep 90 \u0026\u0026 node install.js` persistence entry; (5) enters an infinite `c2Loop()` polling Telegram `getUpdates` and dispatching attacker-supplied `/sh`, `/cmd`, `/keys`, `/ssh`, `/env`, `/wallet` commands through `execSync`, giving the operator arbitrary remote code execution. An HMAC `AUTH_SECRET` and the bot credentials are XOR-obfuscated, with an in-source comment acknowledging anti-scanner intent.\n\nThe OpenSSF Package Analysis project identified '@solana-labs/web3-js' @ 1.0.0 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n\n- The package executes one or more commands associated with malicious behavior.","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 @solana-labs/web3-js (npm)","id":"MAL-2026-5363","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":[],"last_affected":[],"package":"@solana-labs/web3-js","purl":"pkg:npm/%40solana-labs%2Fweb3-js","source":"MAL-2026-5363"}],"products":null,"published":"2026-06-07","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-2026-5363/"}