{"cve":"CVE-2026-30837","nvd":{"published":"2026-03-10T21:16:47.070","modified":"2026-06-17T10:33:00.227","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-1333"],"references":["https://github.com/EdamAme-x/elysia-poc-redos","https://github.com/elysiajs/elysia/security/advisories/GHSA-f45g-68q3-5w8x"],"products":["elysiajs:elysia"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-30837","score":0.00514,"percentile":0.43799,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-f45g-68q3-5w8x","url":"https://osv.dev/vulnerability/GHSA-f45g-68q3-5w8x","summary":"Elysia has a string URL format ReDoS","modified":"2026-03-13T04:22:10.994103Z","packages":[{"ecosystem":"npm","name":"elysia","purl":"pkg:npm/elysia","ranges":["<1.4.26"],"fixed":["1.4.26"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}