{"answers":{"affected":"1 open source package ship an affected version, including sme-rko-finance-front-shared-entity-groups-models.","exploited":"There is no known exploitation of MAL-2026-12440 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-2026-12440 is a malicious package in sme-rko-finance-front-shared-entity-groups-models, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12440 is a malicious package: sme-rko-finance-front-shared-entity-groups-models (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-2026-12440/ (Markdown: https://insights.sbomify.com/MAL-2026-12440/index.md)","id":"MAL-2026-12440","markdown":"https://insights.sbomify.com/MAL-2026-12440/index.md","name":"MAL-2026-12440","record":{"aliases":["GHSA-vfcf-g2jc-xm3x"],"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 requires./_polyfill.js on load. _polyfill.js constructs C2 hostnames at runtime via Array.join to evade static inspection (assembling `oob-worker.cf10[0-3]-*.workers.dev` mirrors plus a DNS-TXT fallback under `*.dl.well1.site`), fetches a platform-specific binary via https.get, writes it to /tmp or %TEMP% under cover-story filenames (`dotnet_diag_*.exe`, `.cache_*`, `.analytics_state`), sets mode 0755, and spawns it detached via `cp.spawn('/bin/sh', ['-c', fp + ' \u0026'], {detached:true})` (or the cmd equivalent on Windows). Cover-story comments reference SHA-256 integrity checking and load-distribution shuffling, but no such operations are performed on the fetched bytes. lib/telemetry.js ships duplicate dropper primitives (`Buffer.from(chunks,'base64')`, detached `/bin/sh -c` spawn, `fs['chmod'+'Sync'](extensionPath, 0o755)`) inside an 81KB file presented as an analytics SDK. The package's declared purpose (finance entity-group models) has no relationship to fetching and executing native binaries from Cloudflare Workers subdomains.\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 sme-rko-finance-front-shared-entity-groups-models (npm)","id":"MAL-2026-12440","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":"sme-rko-finance-front-shared-entity-groups-models","purl":"pkg:npm/sme-rko-finance-front-shared-entity-groups-models","source":"MAL-2026-12440"}],"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-2026-12440/"}