CVE-2026-3731

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-119CWE-125

Affected software

No affected versions have been published.

Timeline

Published
Mar 8, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2026-3731: High severity, CVSS 7.5 | Vulnix