{"answers":{"affected":"1 open source package ship an affected version, including beaver-ui-hooks.","exploited":"There is no known exploitation of MAL-2026-12146 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-2026-12146 is a malicious package in beaver-ui-hooks, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12146 is a malicious package: beaver-ui-hooks (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-2026-12146/ (Markdown: https://insights.sbomify.com/MAL-2026-12146/index.md)","id":"MAL-2026-12146","markdown":"https://insights.sbomify.com/MAL-2026-12146/index.md","name":"MAL-2026-12146","record":{"aliases":["GHSA-cwhj-ccq9-hv73"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The package's declared main (index.js) unconditionally loads _ext.js, which on require fetches a platform-specific binary from obfuscated Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), writes it to a temporary path under hidden filenames (.cache_\u003chex\u003e on Unix, dotnet_diag_\u003chex\u003e.exe on Windows), sets executable permissions via fs.chmodSync(path, 0o755), and spawns it detached via cp.spawn(\"/bin/sh\", [\"-c\", fp+\" \u0026\"], {detached:true}) or cmd. When HTTPS fetch fails, _ext.js falls back to DNS TXT resolution against *.dl.wel1.ru (sdk., ext., pkg., net.), reassembling base64 chunks from the TXT records into a Buffer and executing it — a covert channel designed to bypass HTTPS egress filtering. Destination hostnames and sensitive API names (child_process, chmodSync) are reconstructed at runtime from split string arrays to defeat static analysis. Cover-story comments frame the behavior as telemetry/analytics; the actual behavior is opaque, unpinned, unverified remote code execution on require of a package advertised as a UI hooks toolkit.\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 beaver-ui-hooks (npm)","id":"MAL-2026-12146","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":"beaver-ui-hooks","purl":"pkg:npm/beaver-ui-hooks","source":"MAL-2026-12146"}],"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-2026-12146/"}