CVE-2026-63374

Katalog CVE

CVSS 9.3 · Critical EPSS 0,29%

Kerentanan Improper Certificate Validation. Skor CVSS 4.0 9.3 (Critical) menurut github.com.

Deskripsi (NVD)

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, connect_tcp() and TLSStream.wrap() can validate internationalized host names after the standard library converts them with IDNA 2003 instead of IDNA 2008. When a connection to a non-ASCII domain is hijacked or redirected, an attacker can obtain a legitimate certificate for the different ASCII hostname produced by IDNA 2003 and present it to the client, causing the malicious endpoint's certificate to validate. This issue is fixed in version 4.14.2.

Rincian

Terbit di NVD

22 September 2026

Terakhir diubah

28 September 2026

Status NVD

Awaiting Analysis

CVSS 4.0

9.3 (Critical), sumber github.com
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-295: Improper Certificate Validation
CWE-297: Improper Validation of Certificate with Host Mismatch

EPSS (30 hari)

0,29% peluang dieksploitasi; lebih tinggi dari 19,8% 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/agronholm/anyio/commit/68f58915f82d9be8109ebbbd8f5d70577d43f2ce
• https://github.com/agronholm/anyio/pull/1208
• https://github.com/agronholm/anyio/releases/tag/4.14.2
• https://github.com/agronholm/anyio/security/advisories/GHSA-82r6-8w77-94w6