CVE-2025-15079

Severity CVSS v4.0:

Pending analysis

Type:

CWE-297 Improper Validation of Certificate with Host Mismatch

Publication date:

08/01/2026

Last modified:

08/01/2026

Description

When doing SSH-based transfers using either SCP or SFTP, and setting the<br /> known_hosts file, libcurl could still mistakenly accept connecting to hosts<br /> *not present* in the specified file if they were added as recognized in the<br /> libssh *global* known_hosts file.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

5.30

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://curl.se/docs/CVE-2025-15079.html
https://curl.se/docs/CVE-2025-15079.json
https://hackerone.com/reports/3477116
http://www.openwall.com/lists/oss-security/2026/01/07/6