CVE-2025-15079

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2025-15079.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2025-15079.json	Vendor Advisory
https://hackerone.com/reports/3477116	Exploit Issue Tracking Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/01/07/6	Mailing List Patch Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

14 Oct 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) Al realizar transferencias basadas en SSH utilizando SCP o SFTP, y al configurar el archivo known_hosts, libcurl aún podría aceptar erróneamente la conexión a hosts no presentes en el archivo especificado si estos se añadían como reconocidos en el archivo known_hosts global de libssh.

Information

Published : 2026-01-08 10:15

Updated : 2026-10-14 16:10

NVD link : CVE-2025-15079

Mitre link : CVE-2025-15079

CVE.ORG link : CVE-2025-15079

JSON object : View

Products Affected

haxx

curl

CWE

CWE-297

Improper Validation of Certificate with Host Mismatch

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"2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://curl.se/docs/CVE-2025-15079.json", "tags": ["Vendor Advisory"], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "https://hackerone.com/reports/3477116", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "2499f714-1537-4658-8207-48ae4bb9eae9"}, {"url": "http://www.openwall.com/lists/oss-security/2026/01/07/6", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "2499f714-1537-4658-8207-48ae4bb9eae9", "description": [{"lang": "en", "value": "CWE-297"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-297"}]}], "descriptions": [{"lang": "en", "value": "When doing SSH-based transfers using either SCP or SFTP, and setting the\nknown_hosts file, libcurl could still mistakenly accept connecting to hosts\n*not present* in the specified file if they were added as recognized in the\nlibssh *global* known_hosts file."}, {"lang": "es", "value": "Al realizar transferencias basadas en SSH utilizando SCP o SFTP, y al configurar el archivo known_hosts, libcurl a\u00fan podr\u00eda aceptar err\u00f3neamente la conexi\u00f3n a hosts no presentes en el archivo especificado si estos se a\u00f1ad\u00edan como reconocidos en el archivo known_hosts global de libssh."}], "lastModified": "2026-10-14T16:10:00.250", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7FEF1B43-51CF-47FA-8D6C-2411D9B3F9C1", "versionEndExcluding": "8.18.0", "versionStartIncluding": "7.58.0"}], "operator": "OR"}]}], "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9"}