{"answers":{"affected":"1 open source package ship an affected version, including checkout-total-logic.","exploited":"There is no known exploitation of MAL-2026-12598 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-2026-12598 is a malicious package in checkout-total-logic, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-12598 is a malicious package: checkout-total-logic (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-2026-12598/ (Markdown: https://insights.sbomify.com/MAL-2026-12598/index.md)","id":"MAL-2026-12598","markdown":"https://insights.sbomify.com/MAL-2026-12598/index.md","name":"MAL-2026-12598","record":{"aliases":[],"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 the package, index.js loads _platform.js, which reconstructs endpoint hostnames from split string fragments resolving to oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, and oob-worker.cf102-baf.workers.dev, with a DNS TXT-record chunked-base64 fallback channel over *.dl.wel1.ru. _platform.js:74 issues https.get to those hosts, writes the returned platform-specific binary to a temp path using decoy filenames (dotnet_diag_*.exe,.cache_*), chmods it 0o755 on Unix, and detached-spawns it via cp.spawn('/bin/sh',['-c',fp+' \u0026'],{detached:true}) on Unix or spawn('cmd',...) on Windows. There is no hash or signature verification, the destination hosts are not publisher-associated, and the package presents itself as a trivial log transport, contradicting the fetch-and-execute behavior. A cooldown flag is dropped in /tmp. The result is unauthenticated remote code execution on any developer or CI host that installs and requires this package.","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-total-logic (npm)","id":"MAL-2026-12598","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-total-logic","purl":"pkg:npm/checkout-total-logic","source":"MAL-2026-12598"}],"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-2026-12598/"}