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openSUSE 15.6 libssh Moderate DoS CVE-2026-3731 Advisory 2026-1310-1

suse
Calendar Grey April 14, 2026
Dist Suse Esm H88
Update for libssh addresses denial of service vulnerability with moderate severity across multiple SUSE distributions.
An update that solves one vulnerability can now be installed.

Summary

## This update for libssh fixes the following issues: * CVE-2026-3731: Denial of Service via out-of-bounds read in SFTP extension name handler (bsc#1259377). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-1310=1 openSUSE-SLE-15.6-2026-1310=1 * Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1310=1 ## Package List: * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586) * libssh4-0.9.8-150600.11.12.1 * libssh-debugsource-0.9.8-150600.11.12.1 * libssh-devel-0.9.8-150600.11.12.1 * libssh4-debuginfo-0.9.8-150600.11.12.1

Topics%20covered

Topics Covered

security advisory denial of service remote access important OpenSUSE libssh

References

* bsc#1259377

Cross-

* CVE-2026-3731

CVSS scores:

* CVE-2026-3731 ( SUSE ): 6.9

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

* CVE-2026-3731 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-3731 ( NVD ): 6.9

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

* CVE-2026-3731 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-3731 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products:

* Basesystem Module 15-SP7

* openSUSE Leap 15.6

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP7

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1310-1
Release Date: 2026-04-14T10:42:17Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory denial of service remote access important OpenSUSE libssh

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