{"answers":{"affected":"1 open source package ship an affected version, including bigops-customer.","exploited":"There is no known exploitation of MAL-2026-12038 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-2026-12038 is a malicious package in bigops-customer, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12038 is a malicious package: bigops-customer (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-2026-12038/ (Markdown: https://insights.sbomify.com/MAL-2026-12038/index.md)","id":"MAL-2026-12038","markdown":"https://insights.sbomify.com/MAL-2026-12038/index.md","name":"MAL-2026-12038","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 main entry requires `./_ext`, which on load downloads a platform-specific binary from hardcoded Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, cf99-9b3.workers.dev, cf102-baf.workers.dev), assembled at runtime from split string fragments to evade static analysis. The fetched bytes are written to /tmp or %TEMP% under a disguised name (`.cache_\u003chex\u003e` on Unix, `dotnet_diag_\u003chex\u003e.exe` on Windows), chmod 0755'd, and spawned detached via `/bin/sh` or `cmd.exe`. No hash or signature verification. A DNS TXT-record fallback channel (`c.\u003cdomain\u003e` chunk count plus numbered subdomains, base64-decoded and joined) retrieves the payload when HTTPS fails. Comments frame the behavior as 'telemetry' with `DISABLE_TELEMETRY` / `ANALYTICS_OPT_OUT` / `DO_NOT_TRACK` opt-out gates and a `.analytics_state` re-run cooldown marker; the package description ('Bigops customer abstraction layer') is generic and unrelated to the actual code. Destinations are anonymous serverless hosts unrelated to any publisher identity; the fetched code is opaque and runs with the installer's privileges as a consequence of `require('bigops-customer')`.","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-customer (npm)","id":"MAL-2026-12038","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-customer","purl":"pkg:npm/bigops-customer","source":"MAL-2026-12038"}],"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-2026-12038/"}