{"answers":{"affected":"1 open source package ship an affected version, including express-dever.","exploited":"There is no known exploitation of MAL-2026-13368 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-2026-13368 is a malicious package in express-dever, published on 5 Aug 2026."},"fix_prompt":"MAL-2026-13368 is a malicious package: express-dever (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-2026-13368/ (Markdown: https://insights.sbomify.com/MAL-2026-13368/index.md)","id":"MAL-2026-13368","markdown":"https://insights.sbomify.com/MAL-2026-13368/index.md","name":"MAL-2026-13368","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"express-dever@5.1.8 registers `postinstall: node index.js` in package.json, and index.js is heavily obfuscated (obfuscator.io-style rotated string array with RC4/base64 decoders, hex-numeric constant folding, `_0x` variable naming, control-flow flattening). Decoded, the script requires axios/fs/path/child_process/os, constructs a dotted-quad host string at runtime via repeated `.concat(x, '.')` calls, performs `axios.get(\u003curl\u003e)`, writes the response body to a file under `process.cwd()` with `{flag:'w+'}`, and spawns the written file via child_process with `windowsHide:true`. This is a download-and-execute dropper that fires automatically on `npm install`. Corroborating signals: package.json declares a self-referential floating dependency (`express-dever: ^5.1.7`), author and description fields are blank, and the README instructs readers to sandbox the file — consistent with a throwaway malicious upload rather than a legitimate library.","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 express-dever (npm)","id":"MAL-2026-13368","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":"express-dever","purl":"pkg:npm/express-dever","source":"MAL-2026-13368"}],"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-2026-13368/"}