{"schema":"threatline.record/2","record":{"id":"GHSA-hx4r-w6wj-j8fg","aliases":["GHSA-hx4r-w6wj-j8fg"],"summary":"devalue: Residual sparse-array CPU amplification in uneval","details":"`uneval` performs synchronous work proportional to a sparse array's declared length. An application that passes attacker-influenced sparse values to `uneval` can suffer event-loop blocking. Since attacker-controlled creation of sparse arrays is so difficult, this vulnerability is very difficult to exploit.","categories":["Libraries & packages"],"product":"devalue","vendor":"","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-hx4r-w6wj-j8fg","source_modified_at":"2026-10-01T15:17:43Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"devalue"},"range":"<= 5.9.2"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-hx4r-w6wj-j8fg","source_modified_at":"2026-10-01T15:30:12.679856219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"devalue","ecosystem":"npm","purl":"pkg:npm/devalue"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.9.3"}]}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-hx4r-w6wj-j8fg","source_modified_at":"2026-10-01T15:17:43Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"devalue"},"version":"5.9.3"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-hx4r-w6wj-j8fg","source_modified_at":"2026-10-01T15:30:12.679856219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"devalue","ecosystem":"npm","purl":"pkg:npm/devalue"},"version":"5.9.3"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-01T15:17:42Z","modified_at":"2026-10-01T15:30:12.679856219Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-hx4r-w6wj-j8fg","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-01T15:17:43Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-hx4r-w6wj-j8fg","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-01T15:30:12.679856219Z"}],"sources":["GitHub Advisory Database","OSV"],"references":[{"url":"https://github.com/sveltejs/devalue/security/advisories/GHSA-hx4r-w6wj-j8fg","source":"GitHub Advisory Database"},{"url":"https://github.com/sveltejs/devalue/commit/6861dbbb7e548849e48bce718e88747a298f7250","source":"GitHub Advisory Database"},{"url":"https://github.com/sveltejs/devalue/releases/tag/v5.9.3","source":"GitHub Advisory Database"},{"url":"https://github.com/advisories/GHSA-hx4r-w6wj-j8fg","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-01T15:30:12.679856219Z","content_hash":"fc8096c11f86e844955db811356c9b6e6d90547a23d54c7b561f6a21641d3fcf"}}