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CVE-2026-31865

Elysia Cookie Value Prototype Pollution PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
elysiajs / elysiaaffected < 1.4.27

CWE

CWE-1321

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.