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Affected Component
Analysis
libssh
Patched
Name
CVE-2026-3731
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://vuldb.com/?ctiid.349709Permissions Required
https://vuldb.com/?id.349709VDB Entry
https://vuldb.com/?submit.767120VDB Entry
Analysis#
Vulnerability Ratings#
6.9
CVSSv4
5.3
CVSSv31
7.5
CVSSv31
5
CVSSv2
NaN
other
Others affected components#
Resolved with patches#
libssh (yocto:kirkstone)
#
Title
Author
Resolve
1
sftp: Fix out-of-bound read from sftp extensions
Jakub Jelen <jjelen@redhat.com>
CVE-2026-3731
libssh (yocto:scarthgap)
#
Title
Author
Resolve
1
sftp: Fix out-of-bound read from sftp extensions
Jakub Jelen <jjelen@redhat.com>
CVE-2026-3731
2
Reproducer for out of bounds read of SFTP extensions
Jakub Jelen <jjelen@redhat.com>
CVE-2026-3731