CVE-2026-12064

Katalog CVE

CVSS 7.5 · High EPSS 0,40%

Kerentanan Improper Validation of Certificate with Host Mismatch pada haxx curl. Skor CVSS 3.1 7.5 (High) menurut CISA ADP.

Deskripsi (NVD)

When a user invokes curl using a schemeless URL combined with `--proto-default` sftp (or scp), a disconnect occurs between the tool layer and libcurl. The tool layer incorrectly infers the URL scheme, which erroneously bypasses the initialization of critical SSH security options like CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 and CURLOPT_SSH_KNOWNHOSTS. Conversely, the libcurl runtime successfully honors CURLOPT_DEFAULT_PROTOCOL and establishes the connection via SFTP/SCP as specified. Because the tool layer skipped the security configuration, these SSH host verification options are silently omitted, causing curl to connect to an unverified SSH remote host without throwing an error.

Rincian

Terbit di NVD

3 Juli 2026

Terakhir diubah

15 September 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

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

EPSS (30 hari)

0,40% peluang dieksploitasi; lebih tinggi dari 32,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://curl.se/docs/CVE-2026-12064.html patch · advisory vendor
• https://curl.se/docs/CVE-2026-12064.json advisory vendor
• https://hackerone.com/reports/3797526 exploit · issue tracking · advisory pihak ketiga