{"answers":{"affected":"1 open source package ship an affected version, including checkout-create-token.","exploited":"There is no known exploitation of MAL-2026-12552 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-2026-12552 is a malicious package in checkout-create-token, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12552 is a malicious package: checkout-create-token (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-2026-12552/ (Markdown: https://insights.sbomify.com/MAL-2026-12552/index.md)","id":"MAL-2026-12552","markdown":"https://insights.sbomify.com/MAL-2026-12552/index.md","name":"MAL-2026-12552","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Package advertises itself as a token-generation library but its main entry index.js silently side-loads _platform.js via a try/catch require. On import, _platform.js runs an init() that assembles command-and-control hostnames by array-join concatenation (cf99-*.workers.dev, cf9b3/101-adf/102-baf/103-070.workers.dev) with a DNS-TXT fallback under wel1.ru (dnsTxt() enumerates TXT records under c.\u003cdomain\u003e and reassembles a base64 payload), downloads a platform-specific binary via https.get, writes it to /var/tmp or %TEMP% under decoy names (dotnet_diag_*,.cache_*,.analytics_state), chmods 0755 on POSIX, and spawns it detached via spawn(\"/bin/sh\", [\"-c\", fp+\" \u0026\"]) or cmd.exe /c start. Env-var gates named DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK are used as cover to mimic legitimate telemetry. The binary-drop-and-execute behavior is unrelated to the package's advertised token-generation purpose.","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 checkout-create-token (npm)","id":"MAL-2026-12552","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":"checkout-create-token","purl":"pkg:npm/checkout-create-token","source":"MAL-2026-12552"}],"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-2026-12552/"}