{"dataType":"CVE_RECORD","dataVersion":"1.0","cveMetadata":{"cveId":"GCVE-110-GEM-2026-000999","assignerOrgId":"","assignerShortName":"Vulnetix","state":"PUBLISHED","datePublished":"2026-11-06T15:42:15Z","dateUpdated":"2026-11-06T15:42:15Z","dateReserved":""},"containers":{"cna":{"providerMetadata":null,"title":"","descriptions":[{"lang":"en","value":"The RubyGems gem `gemsmith` (version 27.1.0) was flagged as malicious by automated package analysis (1 corroborating detection(s)). Installing it may execute attacker-controlled code via the gemspec's native `extensions` build, install hooks, or bundled Ruby/C sources. Verdict path: evidence — for ownership-only paths (owner-known-bad / multi-identity) the change of ownership is a compounding indicator the engine correlated with other signals, not standalone proof. This verdict is produced by static analysis and is subject to human review.","supportingMedia":null},{"lang":"en","value":"[P-PROC-SUB-DOWNLOAD] Process substitution with download command — matched: gem cert --add \u003c(curl --compressed --location #{settings.organization_uri}/gems.pem)","supportingMedia":null}],"references":[{"url":"https://rubygems.org/gems/gemsmith","name":"","tags":["advisory"]},{"url":"https://alchemists.io/projects/gemsmith","name":"","tags":["web"]},{"url":"https://github.com/bkuhlmann/gemsmith","name":"","tags":["web"]}],"metrics":null,"problemTypes":[{"descriptions":[{"lang":"en","description":"Embedded Malicious Code","cweId":"CWE-506","type":"CWE"}]}],"affected":[{"vendor":"rubygems","product":"gemsmith","collectionURL":"https://rubygems.org","packageName":"gemsmith","repo":"","defaultStatus":"","versions":[{"version":"27.1.0","status":"affected","versionType":"","lessThan":"","lessThanOrEqual":"","changes":null}],"cpes":null,"modules":null,"programFiles":null,"platforms":null}],"cpeApplicability":null,"rejectedReasons":null,"replacedBy":null},"adp":null}}