{"answers":{"affected":"1 open source package ship an affected version, including pg-expense-example.","exploited":"There is no known exploitation of MAL-2026-4639 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-2026-4639 is a malicious package in pg-expense-example, published on 22 May 2026."},"fix_prompt":"MAL-2026-4639 is a malicious package: pg-expense-example (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-2026-4639/ (Markdown: https://insights.sbomify.com/MAL-2026-4639/index.md)","id":"MAL-2026-4639","markdown":"https://insights.sbomify.com/MAL-2026-4639/index.md","name":"MAL-2026-4639","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/load, index.js unconditionally collects host identifiers (hostname, username, platform, arch, cwd, pid) and sends them as URL query parameters via HTTPS GET to a hardcoded Burp Collaborator-style domain `vwfmeddcdgidvdwpkigkg0l8us5vf3wtx.oast.fun`. The package ships no advertised functionality — its only behavior on load is the beacon. package.json has empty author/description fields and declares an unused `chalk` dependency. A code comment in Azerbaijani (`sənin domenin` = 'your domain') is consistent with an attacker-controlled callback host, indicating PoC/reconnaissance malware rather than legitimate software.","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 pg-expense-example (npm)","id":"MAL-2026-4639","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":"pg-expense-example","purl":"pkg:npm/pg-expense-example","source":"MAL-2026-4639"}],"products":null,"published":"2026-05-22","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-2026-4639/"}