{"answers":{"affected":"1 open source package ship an affected version, including supertokens-web.","exploited":"There is no known exploitation of MAL-2026-10423 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-2026-10423 is a malicious package in supertokens-web, published on 13 Jul 2026."},"fix_prompt":"MAL-2026-10423 is a malicious package: supertokens-web (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-2026-10423/ (Markdown: https://insights.sbomify.com/MAL-2026-10423/index.md)","id":"MAL-2026-10423","markdown":"https://insights.sbomify.com/MAL-2026-10423/index.md","name":"MAL-2026-10423","record":{"aliases":["GHSA-m7xr-6cvv-jm79"],"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 main module (index.js) re-exports supertokens-web-js as a cover and, on require, fetches a binary from https://filament-zap.vercel.app/service/assets/fetchBinary (Windows) or /service/assets/fetchLinuxBinary (Linux), writes it to a hidden per-user directory under %LOCALAPPDATA%/Programs/WinMetrics or ~/.local/share/WinMetrics as WinService.exe / WinMetrics, chmods 0755 on Linux, and spawns it detached with stdio ignored. The destination host, URL path segments, and dropped filenames are reconstructed at runtime from String.fromCharCode arrays to hide them from static inspection. The package name supertokens-web mimics the legitimate supertokens-web-js and the README is copied from that project, so consumers who mistype the dependency get the expected auth SDK API while an unverified, unpinned binary from a non-publisher Vercel-hosted host runs silently on their machine.\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 supertokens-web (npm)","id":"MAL-2026-10423","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":"supertokens-web","purl":"pkg:npm/supertokens-web","source":"MAL-2026-10423"}],"products":null,"published":"2026-07-13","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-2026-10423/"}