{"id":"GHSA-97r2-qh9m-474h","revision":"333005bd221e40e4aca442722ab8e550","records":[{"revision":"333005bd221e40e4aca442722ab8e550","observedAt":"2026-10-28T21:55:29.474+00:00","statement":{"source":"osv","id":"GHSA-97r2-qh9m-474h","aliases":["CVE-2026-116581"],"title":"Seroval: fromJSON deserializer trusts node-supplied array length and sequence doneAt (unauthenticated event-loop DoS)","description":"### Summary\n\n`fromJSON` and `fromCrossJSON` used two node fields without checking them.\n\n- An array node's element list was not checked to be an array. A small payload could set the length the decoder looped over. This part is also tracked in GHSA-wp97-x4hv-qvhp.\n- A sequence node's done index was not checked. A crafted value produced an iterator that never finished.\n\n### Impact\n\nA service that passes untrusted input to `fromJSON` or `fromCrossJSON` can be made unavailable by an unauthenticated request.\n\n- The array case blocks the thread while the decoder runs.\n- The sequence case makes any code that reads the resulting iterator to the end run forever.\n\n### Patches\n\nFixed in `seroval@1.6.8`.\n\n- Element lists must be arrays.\n- A sequence node's throw and done indices must be integers from -1 up to the last element index.\n\nInvalid input throws `SerovalMalformedNodeError`.\n\n### Workarounds\n\nNone. Upgrade to 1.6.8.","state":0,"publishedAt":"2026-10-28T21:17:27+00:00","modifiedAt":"2026-10-28T21:30:06.7995772+00:00","affected":[{"ecosystem":"npm","name":"seroval","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.6.8"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-97r2-qh9m-474h","https://nvd.nist.gov/vuln/detail/CVE-2026-116581","https://github.com/lxsmnsyc/seroval/commit/cdcee3e3bc384ee844360844f8ea98fd2b275d69","https://github.com/lxsmnsyc/seroval/commit/e176f9267e59ddd6c9de89cc9fe85c5b37a5b728","https://github.com/lxsmnsyc/seroval","https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.8"],"sourceUrl":"https://github.com/advisories/GHSA-97r2-qh9m-474h","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-97r2-qh9m-474h","identifiers":["GHSA-97r2-qh9m-474h","CVE-2026-116581"]},"retained":false,"historicalAffected":[]}],"coverage":[]}