{"answers":{"affected":"1 open source package ship an affected version, including claims-claims-api-adapters.","exploited":"There is no known exploitation of MAL-2026-12610 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-2026-12610 is a malicious package in claims-claims-api-adapters, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12610 is a malicious package: claims-claims-api-adapters (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-2026-12610/ (Markdown: https://insights.sbomify.com/MAL-2026-12610/index.md)","id":"MAL-2026-12610","markdown":"https://insights.sbomify.com/MAL-2026-12610/index.md","name":"MAL-2026-12610","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 _loader.js which selects a platform-specific temp path, downloads a binary over HTTPS from anonymous *.workers.dev hosts whose names are reconstructed at runtime by joining split string fragments (e.g. oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), writes the bytes to a stealth filename (dotnet_diag_\u003crand\u003e.exe on Windows,.cache_\u003crand\u003e on Linux/macOS), chmods 0755, and spawns it detached via /bin/sh -c or cmd. If HTTPS retrieval fails, the loader falls back to a covert DNS-TXT channel against sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, requesting c.\u003cdomain\u003e for a chunk count and \u003ci\u003e.\u003cdomain\u003e for up to 2000 base64 chunks, concatenating and base64-decoding the result into the payload buffer that is then written and executed. No hash or signature verification is performed; destination hostnames are obfuscated to evade static inspection.","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 claims-claims-api-adapters (npm)","id":"MAL-2026-12610","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":"claims-claims-api-adapters","purl":"pkg:npm/claims-claims-api-adapters","source":"MAL-2026-12610"}],"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-2026-12610/"}