{"id":"CVE-2026-30837","aliases":["GHSA-f45g-68q3-5w8x"],"url":"https://o3.security/vulnerability/CVE-2026-30837","summary":"Elysia has a string URL format redos","details":"Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Prior to 1.4.26 , t.String({ format: 'url' }) is vulnerable to ReDoS. Repeating a partial url format (protocol and hostname) multiple times cause regex to slow down significantly. This vulnerability is fixed in 1.4.26.","published":"2026-03-10T20:12:14.627Z","modified":"2026-08-12T03:51:45.951097550Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"elysia","fixedVersion":"1.4.26"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30837.json"},{"type":"ADVISORY","url":"https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30837"},{"type":"PACKAGE","url":"https://github.com/EdamAme-x/elysia-poc-redos"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:45.951097550Z"}}