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CVE-2026-47775

MEDIUM · CVSS 6.8 EPSS %0.22 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-06-26T18:16:59.350 · Çekilme zamanı: 2026-06-30T18:35:58.430902+00:00

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Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

GitHub PoC Linkleri

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CVE
CVE-2026-47775
Severity
MEDIUM
CVSS
6.8
EPSS
%0.22
Exchange Oracle

Orijinal NVD Açıklaması

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.