curl's code for managing SSH connections when SFTP was done using the wolfSSH
powered backend was flawed and missed host verification mechanisms.

This prevents curl from detecting MITM attackers and more.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00015.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Curl Subscribe
Curl Subscribe
Haxx Subscribe
Curl Subscribe

Configuration 1 [-]

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Curl Subscribe
Curl Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.openwall.com/lists/oss-security/2025/11/05/2 cve-icon cve-icon
https://curl.se/docs/CVE-2025-10966.html cve-icon cve-icon cve-icon
https://curl.se/docs/CVE-2025-10966.json cve-icon cve-icon cve-icon
https://github.com/curl/curl/commit/b011e3fcfb06d6c027859 cve-icon
https://hackerone.com/reports/3355218 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-10966 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-10966 cve-icon
History

Wed, 21 Jan 2026 00:00:00 +0900

Type Values Removed Values Added
First Time appeared Haxx
Haxx curl
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
Vendors & Products Haxx
Haxx curl

Tue, 11 Nov 2025 06:15:00 +0900

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Mon, 10 Nov 2025 18:45:00 +0900

Type Values Removed Values Added
First Time appeared Curl
Curl curl
Vendors & Products Curl
Curl curl

Sat, 08 Nov 2025 09:15:00 +0900

Type Values Removed Values Added
Weaknesses CWE-322
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

threat_severity

Moderate

Fri, 07 Nov 2025 17:30:00 +0900

Type Values Removed Values Added
References

Fri, 07 Nov 2025 16:45:00 +0900

Type Values Removed Values Added
Description curl's code for managing SSH connections when SFTP was done using the wolfSSH powered backend was flawed and missed host verification mechanisms. This prevents curl from detecting MITM attackers and more.
Title missing SFTP host verification with wolfSSH
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: curl

Published:

Updated: 2025-11-10T20:26:07.282Z

Reserved: 2025-09-25T10:15:10.502Z

Link: CVE-2025-10966

cve-icon Vulnrichment

Updated: 2025-11-07T08:05:50.150Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-07T08:15:39.617

Modified: 2026-01-20T14:57:03.173

Link: CVE-2025-10966

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-11-07T07:26:30Z

Links: CVE-2025-10966 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-11-10T18:34:48Z

Weaknesses