Description

Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to version 1.4.27, an Elysia cookie can be overridden by prototype pollution , eg. `__proto__`. This issue is patched in 1.4.27. As a workaround, use t.Cookie validation to enforce validation value and/or prevent iterable over cookie if possible.

INFO

Published Date :

2026-03-18T02:50:55.403Z

Last Modified :

2026-03-18T18:39:09.024Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-31865 vulnerability.

Vendors Products
Elysiajs
  • Elysia
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31865.

URL Resource
https://github.com/elysiajs/elysia/commit/e9d6b1743fa7368ef942dce181f6a089757f6aab cve-icon cve-icon
https://github.com/elysiajs/elysia/security/advisories/GHSA-8hq9-phh3-p2wp cve-icon cve-icon
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CVSS Vulnerability Scoring System

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