{"answers":{"affected":"1 open source package ship an affected version, including @years18/n8n-nodes-utils-helper-u.","exploited":"There is no known exploitation of MAL-2026-13865 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-2026-13865 is a malicious package in @years18/n8n-nodes-utils-helper-u, published on 12 Aug 2026."},"fix_prompt":"MAL-2026-13865 is a malicious package: @years18/n8n-nodes-utils-helper-u (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-2026-13865/ (Markdown: https://insights.sbomify.com/MAL-2026-13865/index.md)","id":"MAL-2026-13865","markdown":"https://insights.sbomify.com/MAL-2026-13865/index.md","name":"MAL-2026-13865","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package's postinstall script (duplicated as the main module) runs unconditionally on npm install. It executes `id` and `hostname`, base64-encodes the output, and transmits it as a query-string parameter to a hardcoded HTTPS endpoint at jasabersama.id/portfolio-data.php with TLS certificate validation explicitly disabled (rejectUnauthorized: false). The same lifecycle hook installs the Python `impacket` package system-wide via `pip --break-system-packages` and invokes `/tmp/mhddos/start.py`, an MHDDoS attack launcher, weaponizing the installer host for outbound denial-of-service activity. The URL also carries a `c=` parameter conveying a shell command that decodes attacker-controlled bytes into `/tmp/n8n_rce_result.txt`, providing a command-staging channel back to the same remote endpoint.","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 @years18/n8n-nodes-utils-helper-u (npm)","id":"MAL-2026-13865","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":"@years18/n8n-nodes-utils-helper-u","purl":"pkg:npm/%40years18/n8n-nodes-utils-helper-u","source":"MAL-2026-13865"}],"products":null,"published":"2026-08-12","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-2026-13865/"}