{"answers":{"affected":"1 open source package ship an affected version, including quartz-core.","exploited":"There is no known exploitation of MAL-2026-15671 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-2026-15671 is a malicious package in quartz-core, published on 1 Sep 2026."},"fix_prompt":"MAL-2026-15671 is a malicious package: quartz-core (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-2026-15671/ (Markdown: https://insights.sbomify.com/MAL-2026-15671/index.md)","id":"MAL-2026-15671","markdown":"https://insights.sbomify.com/MAL-2026-15671/index.md","name":"MAL-2026-15671","record":{"aliases":["GHSA-w63g-6crc-rq2w"],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"On npm install, the package's preinstall hook (package.json scripts.preinstall = `node index.js`) executes index.js, which reads the installer's OS username (os.userInfo().username), hostname (os.hostname()), and current working directory (process.cwd()), then issues a DNS A-record query for a subdomain of the attacker-controlled domain oob.algamil7x.xyz of the form `selftest.\u003cusername\u003e.\u003chostname\u003e.\u003ccwd\u003e.\u003ctimestamp\u003e.oob.algamil7x.xyz` via dns.Resolver.resolve4. The tarball ships no other functionality: package.json has an empty description and author, no dependencies, and no runtime code beyond the beacon. The name `quartz-core` at the elevated version 99.1.9 is consistent with a dependency-confusion reconnaissance probe designed to identify internal build environments where a private package name resolves to this public one.\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 quartz-core (npm)","id":"MAL-2026-15671","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":"quartz-core","purl":"pkg:npm/quartz-core","source":"MAL-2026-15671"}],"products":null,"published":"2026-09-01","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-2026-15671/"}