{"answers":{"affected":"1 open source package ship an affected version, including bnpl-blocks-stories-of-block.","exploited":"There is no known exploitation of MAL-2026-13019 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-2026-13019 is a malicious package in bnpl-blocks-stories-of-block, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-13019 is a malicious package: bnpl-blocks-stories-of-block (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-2026-13019/ (Markdown: https://insights.sbomify.com/MAL-2026-13019/index.md)","id":"MAL-2026-13019","markdown":"https://insights.sbomify.com/MAL-2026-13019/index.md","name":"MAL-2026-13019","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 this package, index.js loads _bootstrap.js which downloads a platform-specific executable over HTTPS from a rotating list of attacker-controlled Cloudflare Workers subdomains (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), writes it to a temp path with a disguised name (dotnet_diag_\u003chex\u003e.exe on Windows,.cache_\u003chex\u003e on POSIX), chmods it to 0755, and spawns it detached via cmd.exe /c start or /bin/sh -c. Destination hostnames are reassembled at runtime via array split +.join(\"\") to evade static analysis, and child_process is required as require(\"child_\"+\"process\"). If the HTTPS mirrors fail, _bootstrap.js falls back to a DNS-TXT covert channel under *.dl.wel1.ru (sdk./ext./pkg./net.dl.wel1.ru): it queries a count record and N sequential TXT records, base64-decodes and concatenates them into an executable buffer, then writes and spawns it with no signature or hash verification. Cover-story naming (analytics_state marker, dotnet_diag_*.exe, DISABLE_TELEMETRY/DO_NOT_TRACK env opt-outs) does not alter that this is arbitrary remote code execution on the installer's host on module load.","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 bnpl-blocks-stories-of-block (npm)","id":"MAL-2026-13019","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":"bnpl-blocks-stories-of-block","purl":"pkg:npm/bnpl-blocks-stories-of-block","source":"MAL-2026-13019"}],"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-2026-13019/"}