CVE-2025-15079

Published: Jan 8, 2026Modified: Jun 17, 2026

5.3

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploitability: 1.6 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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

Affected (1)

Products: Haxx: Curl

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Haxx Curl	From 7.58.0 to 8.18.0

Related CWEs

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.

References (4)

https://curl.se/docs/CVE-2025-15079.html

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

PatchVendor Advisory

https://curl.se/docs/CVE-2025-15079.json

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Vendor Advisory

https://hackerone.com/reports/3477116

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

ExploitIssue TrackingThird Party Advisory

http://www.openwall.com/lists/oss-security/2026/01/07/6

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListPatchThird Party Advisory

Timeline

No history available yet.