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.
References (6)
Core 6
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.349709
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.349709
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.767120
Vendor Advisory related
https://www.libssh.org/security/advisories/libssh-2026-sftp-extensions.txt
Patch patch
https://gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60
Various Sources patch
https://www.libssh.org/files/0.12/libssh-0.12.0.tar.xz
Scores
CVSS v3
5.3
EPSS
0.0063
EPSS Percentile
45.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-125
CWE-119
Status
published
Products (1)
libssh/libssh
< 0.11.3
Published
Mar 08, 2026
Tracked Since
Mar 08, 2026