{"answers":{"affected":"1 open source package ship an affected version, including devplatform-eslint-config.","exploited":"There is no known exploitation of MAL-2026-13544 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-2026-13544 is a malicious package in devplatform-eslint-config, published on 7 Aug 2026."},"fix_prompt":"MAL-2026-13544 is a malicious package: devplatform-eslint-config (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-2026-13544/ (Markdown: https://insights.sbomify.com/MAL-2026-13544/index.md)","id":"MAL-2026-13544","markdown":"https://insights.sbomify.com/MAL-2026-13544/index.md","name":"MAL-2026-13544","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"devplatform-eslint-config@35.8.9 ships no ESLint configuration despite its name and description. Requiring the package loads _compat.js, which on import selects a payload path based on OS/architecture (linux_x64, linux_arm64, darwin, win32), fetches an opaque native binary over HTTPS from a rotating set of Cloudflare Workers hosts whose names are assembled at runtime by joining split string fragments (oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev), with a DNS-TXT covert-channel fallback that reassembles base64 chunks from TXT records under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to a temporary path with a decoy filename (e.g. dotnet_diag_*.exe,.cache_*), chmod 0755, and executed via a detached child process (cp.spawn('/bin/sh',['-c', fp+' \u0026'], {detached:true}) on POSIX, cmd.exe start /b on Windows). lib/telemetry.js contains duplicate fetch-write-chmod-spawn primitives. Runtime string assembly of C2 hostnames hides destinations from static analysis, and the ESLint-config identity is a cover story unrelated to the shipped code.","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 devplatform-eslint-config (npm)","id":"MAL-2026-13544","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":"devplatform-eslint-config","purl":"pkg:npm/devplatform-eslint-config","source":"MAL-2026-13544"}],"products":null,"published":"2026-08-07","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-2026-13544/"}