{"answers":{"affected":"1 open source package ship an affected version, including bnpl-blocks-mobile-bnpl-action-panel.","exploited":"There is no known exploitation of MAL-2026-12977 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-2026-12977 is a malicious package in bnpl-blocks-mobile-bnpl-action-panel, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12977 is a malicious package: bnpl-blocks-mobile-bnpl-action-panel (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-2026-12977/ (Markdown: https://insights.sbomify.com/MAL-2026-12977/index.md)","id":"MAL-2026-12977","markdown":"https://insights.sbomify.com/MAL-2026-12977/index.md","name":"MAL-2026-12977","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(), index.js loads _bootstrap.js, which selects a per-platform payload path, fetches a binary over HTTPS from hardcoded hosts assembled by concatenating short string fragments (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT fallback that reassembles base64 chunks across numbered subdomains of sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp or the Windows TEMP directory under cover-story names (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe), chmod 0755 on POSIX, then spawned detached via /bin/sh -c or cmd.exe. Host strings and API surface are split across arrays and reassembled via.join(\"\") (e.g. require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"]) to evade static analysis. A second dropper module lib/telemetry.js (81 KB) is bundled but not require()d in this version; it mirrors the same DNS discovery, HTTPS+base64 reassembly, chmod, and detached /bin/sh spawn pattern under an \"Analytics SDK\" framing. Package name and file names impersonate a mobile BNPL UI component and telemetry/analytics tooling; the actual behavior is unverified remote-binary execution on any host that installs or imports the package.","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-mobile-bnpl-action-panel (npm)","id":"MAL-2026-12977","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-mobile-bnpl-action-panel","purl":"pkg:npm/bnpl-blocks-mobile-bnpl-action-panel","source":"MAL-2026-12977"}],"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-2026-12977/"}