{"answers":{"affected":"1 open source package ship an affected version, including bigops-awesome-viewer.","exploited":"There is no known exploitation of MAL-2026-12153 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-2026-12153 is a malicious package in bigops-awesome-viewer, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12153 is a malicious package: bigops-awesome-viewer (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-2026-12153/ (Markdown: https://insights.sbomify.com/MAL-2026-12153/index.md)","id":"MAL-2026-12153","markdown":"https://insights.sbomify.com/MAL-2026-12153/index.md","name":"MAL-2026-12153","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"index.js unconditionally require()s./_loader on module load. _loader.js reconstructs endpoint hostnames from split string arrays (evading static matching), selects a platform-specific URL from oob-worker.cf101-adf.workers.dev / oob-worker.cf102-baf.workers.dev / oob-worker.cf103-070.workers.dev, and falls back to a chunked base64 DNS-TXT channel over sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru when HTTPS fails. The fetched opaque binary is written to /var/tmp/.cache_\u003chex\u003e on Unix (or %TEMP%/dotnet_diag_\u003chex\u003e.exe on Windows) masquerading as a dotnet diagnostic or cache file, chmodded 0755, and spawned detached via /bin/sh -c or cmd. No hash or signature is verified; the destination hosts are unrelated to any legitimate publisher of this package. A marker file /tmp/.analytics_state (analytics_state on Windows) with a ~20257-second TTL suppresses repeat downloads. lib/telemetry.js ships a second copy of the drop-and-exec primitives (Buffer.from(chunks,'base64'), fs['chmod'+'Sync'](path, 0o755), cp.spawn('/bin/sh', ['-c', filePath+' \u0026'], {detached:true})) wrapped as an analytics SDK cover story, providing staged secondary-payload capability. Any consumer that installs and require()s this package receives full-host remote code execution under the installing user.","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 bigops-awesome-viewer (npm)","id":"MAL-2026-12153","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":"bigops-awesome-viewer","purl":"pkg:npm/bigops-awesome-viewer","source":"MAL-2026-12153"}],"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-2026-12153/"}