CVE-2026-9547 : 詳細

CVE-2026-9547

2026-07-03
06h18 +00:00
A07-Identif. and Authent. Fail
2026-09-15
06h03 +00:00
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CVE の説明

SSH improper host validation

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.

CVE の情報

関連する弱点

CWE-ID 弱点名 出典
CWE-297 Improper Validation of Certificate with Host Mismatch
The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host.

参考資料