CVE-2025-50864

Katalog CVE

CVSS 6.5 · Medium EPSS 0,47%

Kerentanan Improper Handling of Case Sensitivity. Skor CVSS 3.1 6.5 (Medium) menurut CISA ADP.

Deskripsi (NVD)

An Origin Validation Error in the elysia-cors library thru 1.3.0 allows attackers to bypass Cross-Origin Resource Sharing (CORS) restrictions. The library incorrectly validates the supplied origin by checking if it is a substring of any domain in the site's CORS policy, rather than performing an exact match. For example, a malicious origin like "notexample.com", "example.common.net" is whitelisted when the site's CORS policy specifies "example.com." This vulnerability enables unauthorized access to user data on sites using the elysia-cors library for CORS validation.

Rincian

Terbit di NVD

20 Agustus 2025

Terakhir diubah

5 Juli 2026

Status NVD

Deferred

CVSS 3.1

6.5 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-178: Improper Handling of Case Sensitivity

EPSS (30 hari)

0,47% peluang dieksploitasi; lebih tinggi dari 39,2% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/elysiajs/elysia-cors/blob/main/src/index.ts
• https://github.com/elysiajs/elysia-cors/commit/9b9eb92e32a7a4b43b6d5108668941701c33e221
• https://github.com/elysiajs/elysia-cors/tree/main
• https://medium.com/@raghavagrawal_23036/cors-bypass-in-popular-opensource-library-ad27fb41e16a