{"answers":{"affected":"1 open source package ship an affected version, including platform-ui-island.","exploited":"There is no known exploitation of MAL-2026-12042 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-2026-12042 is a malicious package in platform-ui-island, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12042 is a malicious package: platform-ui-island (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-2026-12042/ (Markdown: https://insights.sbomify.com/MAL-2026-12042/index.md)","id":"MAL-2026-12042","markdown":"https://insights.sbomify.com/MAL-2026-12042/index.md","name":"MAL-2026-12042","record":{"aliases":["GHSA-32mj-37qf-85h6"],"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 index.js unconditionally loads _bridge.js on require. _bridge.js downloads a platform-specific native binary from obfuscated Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), assembled at runtime by string concatenation (e.g. [\"oob-work\",\"er.cf99-9\",\"b3.workers.\",\"dev\"].join(\"\")) to evade plaintext scanning. The payload is written to a deceptive path (dotnet_diag_\u003chex\u003e.exe on Windows, /var/tmp/.cache_\u003chex\u003e on Unix), chmod 0755, and spawned detached via /bin/sh or cmd. When HTTPS fails, _bridge.js falls back to reconstructing the payload from base64 chunks retrieved via DNS TXT queries to *.dl.well1.site subdomains (tin/tina/ldr/win.dl.well1.site), also string-concat obfuscated, and executes it via the same chmod+spawn path — a covert channel designed to bypass HTTPS egress filtering. Cover-story comments (\"Shuffle endpoints to distribute load\", \"Cache validation\") and a persistence flag file named.analytics_state frame the dropper as telemetry. lib/telemetry.js additionally ships the same fetch/decode/chmod/spawn primitives (81 KB, framed as an Analytics SDK) as a dormant secondary loader, though not referenced from index.js in this version. The package is advertised as visual UI components, which has no purpose-aligned reason to fetch or execute native binaries.\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 platform-ui-island (npm)","id":"MAL-2026-12042","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":"platform-ui-island","purl":"pkg:npm/platform-ui-island","source":"MAL-2026-12042"}],"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-2026-12042/"}