{"cve":"CVE-2026-56669","nvd":{"published":"2026-07-08T21:16:50.690","modified":"2026-10-25T17:10:00.197","status":"Deferred","description":"Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to 1.4.29, Elysia uses getAll in form data normalization for multipart/form-data endpoints, causing the amount of work to grow quadratically with the number of unique key-value pairs and allowing CPU exhaustion. This issue is fixed in version 1.4.29.","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-407","CWE-436"],"references":["https://gist.github.com/jviide/ea040eabe7bac058326174e2cd42dfd9","https://github.com/elysiajs/elysia/commit/8358ff9efbcedf9534995f5977f26b9ceab59329","https://github.com/elysiajs/elysia/releases/tag/1.4.29","https://github.com/elysiajs/elysia/security/advisories/GHSA-9643-4qgh-g8mx"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-56669","score":0.0063,"percentile":0.49882,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-9643-4qgh-g8mx","url":"https://osv.dev/vulnerability/GHSA-9643-4qgh-g8mx","summary":"elysia has Inefficient Algorithmic Complexity and Interpretation Conflict","modified":"2026-09-23T22:00:04.429969872Z","packages":[{"ecosystem":"npm","name":"elysia","purl":"pkg:npm/elysia","ranges":["<1.4.29"],"fixed":["1.4.29"]}]}],"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."]}