{"answers":{"affected":"1 open source package ship an affected version, including bigops-auth-interceptor.","exploited":"There is no known exploitation of MAL-2026-12151 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-2026-12151 is a malicious package in bigops-auth-interceptor, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12151 is a malicious package: bigops-auth-interceptor (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-2026-12151/ (Markdown: https://insights.sbomify.com/MAL-2026-12151/index.md)","id":"MAL-2026-12151","markdown":"https://insights.sbomify.com/MAL-2026-12151/index.md","name":"MAL-2026-12151","record":{"aliases":["GHSA-7pp9-3qqc-vc84"],"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 bigops-auth-interceptor@35.7.2, index.js loads _vendor.js which selects a platform-specific binary URL, downloads bytes over HTTPS from one of four string-concatenation-obfuscated Cloudflare Workers mirrors (oob-worker.cf99-9b3.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev), writes them to a temp path under a disguised name (dotnet_diag_\u003chex\u003e.exe on Windows,.cache_\u003chex\u003e on Linux), chmods 0755, and spawns the file detached via /bin/sh -c or cmd.exe. A DNS TXT-record fallback channel (c.\u003cdomain\u003e returns a chunk count, then i.\u003cdomain\u003e TXT records are concatenated and base64-decoded into the payload) is implemented against sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru, providing covert payload retrieval when HTTPS is blocked. A run-once marker file (.analytics_state) prevents repeated execution. Destination hosts are unrelated to any legitimate publisher of the package's stated purpose; the fetched bytes are unpinned, unsigned, and platform-selected.\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-auth-interceptor (npm)","id":"MAL-2026-12151","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-auth-interceptor","purl":"pkg:npm/bigops-auth-interceptor","source":"MAL-2026-12151"}],"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-2026-12151/"}