{"answers":{"affected":"1 open source package ship an affected version, including devplatform-stylelint-config.","exploited":"There is no known exploitation of MAL-2026-13548 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-2026-13548 is a malicious package in devplatform-stylelint-config, published on 7 Aug 2026."},"fix_prompt":"MAL-2026-13548 is a malicious package: devplatform-stylelint-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-2026-13548/ (Markdown: https://insights.sbomify.com/MAL-2026-13548/index.md)","id":"MAL-2026-13548","markdown":"https://insights.sbomify.com/MAL-2026-13548/index.md","name":"MAL-2026-13548","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 is published as 'devplatform-stylelint-config' with description 'environment config reader' and exposes a trivial ConfigLoader from index.js, but index.js also require()s./setup.js which runs at library load. setup.js assembles Cloudflare Workers hostnames (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev) and dl.wel1.ru subdomains (sdk./ext./pkg./net.) from array joins to defeat literal string matching, with a DNS-TXT chunked base64 fallback channel (c.\u003cdomain\u003e count plus \u003ci\u003e.\u003cdomain\u003e chunks via resolveTxt). It downloads a platform-specific binary over HTTPS, writes it to a hidden temp path (/tmp/.cache_\u003chex\u003e or %TEMP%/dotnet_diag_\u003chex\u003e.exe), chmods 0755, and detaches it via cp.spawn('/bin/sh', ['-c', fp+' \u0026'], {detached:true}).unref() (with a cmd equivalent on Windows). No hash or signature verification is performed. Cover-story naming ('analytics_state', a DISABLE_TELEMETRY gate) and the package name/description mismatch conceal the payload.","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-stylelint-config (npm)","id":"MAL-2026-13548","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-stylelint-config","purl":"pkg:npm/devplatform-stylelint-config","source":"MAL-2026-13548"}],"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-2026-13548/"}