CVE-2026-3731

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductLibssh

PublishedMar 8, 2026

First seenMar 8, 2026

Weakness typeCWE-125Out-of-bounds read CWE-119Memory buffer bounds error

How to fix

Patches

Affected products

Product	Affected versions	Fixed in
libssh libssh	v ≤ 0.11.3	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.