{"answers":{"affected":"1 open source package ship an affected version, including ui-weave.","exploited":"There is no known exploitation of MAL-2026-5406 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-2026-5406 is a malicious package in ui-weave, published on 9 Jun 2026."},"fix_prompt":"MAL-2026-5406 is a malicious package: ui-weave (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-2026-5406/ (Markdown: https://insights.sbomify.com/MAL-2026-5406/index.md)","id":"MAL-2026-5406","markdown":"https://insights.sbomify.com/MAL-2026-5406/index.md","name":"MAL-2026-5406","record":{"aliases":["GHSA-x2w5-px4q-j9wq"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"package.json declares `postinstall: node lib/utils/index.js`, which spawns a detached child process running lib/utils/smtp-connection/index.js. That script fetches https://www.jsonkeeper.com/b/QHDXR and feeds the response's `data.cookie` field directly into `new Function('require', data.cookie)(require)`, executing whatever JavaScript is hosted at that URL on every machine that runs `npm install ui-weave`. jsonkeeper.com is a public, mutable, anonymous paste host — the author can change the served payload at any time without republishing the package. The detached/unref'd spawn is intended to outlive the install command. The package additionally impersonates nodemailer: it ships nodemailer's source under `lib/nodemailer.js`, claims author `Andris Reinman` (the real nodemailer maintainer), and copies an unrelated React Training copyright string as its description, while being published under the unrelated name `ui-weave` with homepage `ui-weave.com`. The impersonation provides a veneer of legitimacy for the install-time remote-code-execution payload.\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 ui-weave (npm)","id":"MAL-2026-5406","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":"ui-weave","purl":"pkg:npm/ui-weave","source":"MAL-2026-5406"}],"products":null,"published":"2026-06-09","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-2026-5406/"}