CVE-2026-91769

Katalog CVE

CVSS 4.3 · Medium EPSS 0,14%

Kerentanan Improper Validation of Certificate with Host Mismatch. Skor CVSS 3.1 4.3 (Medium) menurut php.net.

Deskripsi (NVD)

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN was still accepted when its CN matched the requested peer_name. A certificate trusted by the client for one name can therefore be used to impersonate another.

Rincian

Terbit di NVD

25 September 2026

Terakhir diubah

29 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

4.3 (Medium), sumber php.net
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-297: Improper Validation of Certificate with Host Mismatch

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 2,6% 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/php/php-src/security/advisories/GHSA-vvx9-73fr-5jjx