Unrated severityNVD Advisory· Published Mar 8, 2026· Updated Mar 11, 2026
libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- osv-coords8 versionspkg:rpm/opensuse/libssh&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Micro%206.1
< 0.9.8-150600.11.12.1+ 7 more
- (no CPE)range: < 0.9.8-150600.11.12.1
- (no CPE)range: < 0.9.8-150200.13.18.1
- (no CPE)range: < 0.9.8-150400.3.17.1
- (no CPE)range: < 0.9.8-150400.3.17.1
- (no CPE)range: < 0.9.8-150400.3.17.1
- (no CPE)range: < 0.9.8-150600.11.12.1
- (no CPE)range: < 0.6.3-12.28.1
- (no CPE)range: < 0.10.6-slfo.1.1_5.1
Patches
Vulnerability mechanics
References
6- gitlab.com/libssh/libssh-mirror/-/commit/855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60mitrepatch
- www.libssh.org/files/0.12/libssh-0.12.0.tar.xzmitrepatch
- vuldb.commitrethird-party-advisory
- vuldb.commitresignaturepermissions-required
- vuldb.commitrevdb-entrytechnical-description
- www.libssh.org/security/advisories/libssh-2026-sftp-extensions.txtmitrerelated
News mentions
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