🛡️ CVE-2026-3731
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-119 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-119
Public Exploit ✅ No
Source NVD
Published 2026-03-08
Updated 2026-06-02
Modified 2026-03-12

Affected Packages

Software From version Fixed in
libssh — 0.11.3

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