CVE-2026-9547

Katalog CVE

CVSS 7.4 · High EPSS 0,33%

Kerentanan Improper Validation of Certificate with Host Mismatch pada haxx curl. Skor CVSS 3.1 7.4 (High) menurut CISA ADP.

Deskripsi (NVD)

When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.

Rincian

Terbit di NVD

3 Juli 2026

Terakhir diubah

15 September 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-297: Improper Validation of Certificate with Host Mismatch

EPSS (30 hari)

0,33% peluang dieksploitasi; lebih tinggi dari 23,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://curl.se/docs/CVE-2026-9547.html patch · advisory vendor
• https://curl.se/docs/CVE-2026-9547.json advisory vendor
• https://hackerone.com/reports/3751712 exploit · issue tracking · advisory pihak ketiga