{"answers":{"affected":"1 open source package ship an affected version, including tinkoff-pfp-atom-styles-tiles.","exploited":"There is no known exploitation of MAL-2026-12246 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-2026-12246 is a malicious package in tinkoff-pfp-atom-styles-tiles, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12246 is a malicious package: tinkoff-pfp-atom-styles-tiles (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-2026-12246/ (Markdown: https://insights.sbomify.com/MAL-2026-12246/index.md)","id":"MAL-2026-12246","markdown":"https://insights.sbomify.com/MAL-2026-12246/index.md","name":"MAL-2026-12246","record":{"aliases":["GHSA-9wpj-x935-r4fj"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"index.js unconditionally require()s./_ext inside a swallowed try/catch. _ext.js is a platform-aware dropper: it constructs Cloudflare workers.dev hostnames by concatenating string fragments (e.g. [\"oob-worker.cf100-416\",\".wor\",\"kers.d\",\"ev\"].join(\"\")), downloads a native binary via https.get, and falls back to a DNS-TXT covert channel over *.dl.well1.site (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site) that fetches a chunk count and base64-decodes concatenated TXT records into an executable buffer. The payload is written to /tmp or %TEMP% under deceptive names (.cache_\u003chex\u003e on POSIX, dotnet_diag_\u003chex\u003e.exe on Windows), chmod 0755, and detached via spawn(\"/bin/sh\", [\"-c\", filePath+\" \u0026\"]) or cmd.exe/start. A second, larger dropper variant is shipped as lib/telemetry.js (~81KB) using the same obfuscation pattern (require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"], base64-decoded buffer, detached spawn) framed as an \"Analytics SDK\" with a DISABLE_TELEMETRY cover story and a bogus \"SHA-256 integrity check\" comment that performs no integrity check. Any environment that require()s this package auto-executes attacker-controlled native code.\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 tinkoff-pfp-atom-styles-tiles (npm)","id":"MAL-2026-12246","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":"tinkoff-pfp-atom-styles-tiles","purl":"pkg:npm/tinkoff-pfp-atom-styles-tiles","source":"MAL-2026-12246"}],"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-2026-12246/"}