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CVE-2026-3731

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CVE-2026-3731

Published: Mar 8, 2026

Modified: Mar 11, 2026

PUBLISHED

CVSS v3.1

5.3

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.

VendorProductVersions

n/a

libssh

affected
0.11.0
affected
0.11.1
affected
0.11.2
affected
0.11.3
unaffected
0.11.4

+1 more versions

Weaknesses (CWE)

CWE-125
CWE-119

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

VDB-349709 | CTI Indicators (IOB, IOC, IOA)
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