{"answers":{"affected":"1 open source package ship an affected version, including boxy-pkg-deps-hash.","exploited":"There is no known exploitation of MAL-2026-13075 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-2026-13075 is a malicious package in boxy-pkg-deps-hash, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-13075 is a malicious package: boxy-pkg-deps-hash (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-2026-13075/ (Markdown: https://insights.sbomify.com/MAL-2026-13075/index.md)","id":"MAL-2026-13075","markdown":"https://insights.sbomify.com/MAL-2026-13075/index.md","name":"MAL-2026-13075","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require() of the package, index.js loads _adapter.js and unconditionally invokes setup(). setup() downloads a platform-specific binary from hardcoded Cloudflare Workers hosts whose names are assembled at runtime via array-join to defeat string search (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev). The fetched bytes are written to /tmp or %TEMP% under disguised filenames (.cache_\u003chex\u003e on Unix, dotnet_diag_\u003chex\u003e.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe /c start. If HTTPS retrieval fails, _adapter.js falls back to a DNS-TXT covert channel: it resolves TXT records under c.\u003csubdomain\u003e.dl.wel1.ru to get a chunk count, then TXT records under N.\u003csubdomain\u003e.dl.wel1.ru to reconstruct base64 chunks, concatenates and decodes them to the same binary, and executes it via the same write/chmod/spawn path. The destination hosts are anonymous *.workers.dev endpoints unrelated to any declared publisher, and env checks use benign-sounding cover names (DISABLE_TELEMETRY/DO_NOT_TRACK). Any import of the package results in full-host remote code execution on the installer.","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 boxy-pkg-deps-hash (npm)","id":"MAL-2026-13075","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":"boxy-pkg-deps-hash","purl":"pkg:npm/boxy-pkg-deps-hash","source":"MAL-2026-13075"}],"products":null,"published":"2026-08-05","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-2026-13075/"}