CVE-2026-47775

Katalog CVE

CVSS 6.8 · Medium EPSS 0,22%

Kerentanan Generation of Error Message Containing Sensitive Information pada envoyproxy envoy. Skor CVSS 3.1 6.8 (Medium) menurut github.com.

Deskripsi (NVD)

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.35.11, 1.36.7, 1.37.3, and 1.38.1, the OAuth2 HTTP filter's encrypt()/decrypt() functions use AES-256-CBC without an authentication tag (no HMAC, no AEAD). The /callback endpoint returns HTTP 302 on successful decryption and HTTP 401 on padding failure, creating a padding oracle. An attacker who obtains the encrypted CodeVerifier cookie can recover the plaintext PKCE code_verifier in ~6,200 requests (~100 seconds), then exchange it with a stolen authorization code to obtain the victim's access token. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.

Rincian

Terbit di NVD

26 Juni 2026

Terakhir diubah

29 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.8 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-209: Generation of Error Message Containing Sensitive Information
CWE-327: Use of a Broken or Risky Cryptographic Algorithm

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/envoyproxy/envoy/security/advisories/GHSA-396h-jpq4-vc7p exploit · advisory vendor · mitigasi