{"answers":{"affected":"1 open source package ship an affected version, including bigops-telephony.","exploited":"There is no known exploitation of MAL-2026-12840 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-2026-12840 is a malicious package in bigops-telephony, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12840 is a malicious package: bigops-telephony (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-2026-12840/ (Markdown: https://insights.sbomify.com/MAL-2026-12840/index.md)","id":"MAL-2026-12840","markdown":"https://insights.sbomify.com/MAL-2026-12840/index.md","name":"MAL-2026-12840","record":{"aliases":["GHSA-j5w7-ccfc-4mrf"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On require('bigops-telephony'), index.js loads _adapter.js which selects a platform-specific asset path, fetches an opaque binary from one of three runtime-assembled workers.dev hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev) with a DNS-TXT base64-reassembly fallback under *.dl.wel1.ru, writes it to /var/tmp or %TEMP% under disguised names such as dotnet_diag_\u003crand\u003e.exe or.cache_\u003crand\u003e, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe. Host strings are reassembled from split arrays at runtime and execution is gated by environment variables (DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, DO_NOT_TRACK) plus a marker file at /tmp/.analytics_state to mimic legitimate telemetry. A second, currently-unreferenced dropper module at lib/telemetry.js is shipped alongside and performs the same base64-decode -\u003e chmod 755 -\u003e spawn /bin/sh chain under an 'analytics SDK' cover story.\n\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.","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-telephony (npm)","id":"MAL-2026-12840","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":["0"],"last_affected":[],"package":"bigops-telephony","purl":"pkg:npm/bigops-telephony","source":"MAL-2026-12840"}],"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-2026-12840/"}