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Fencer Vulns
medium 5.0

CVE-2026-0964 json

Libssh: improper sanitation of paths received from scp servers

published 2026-03-26 7 mo ago modified 2026-11-05 3 d ago also EUVD-2026-16326 , JLSEC-2026-779

cvss
5.0
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

A malicious SCP server can send unexpected paths that could make the client application override local files outside of working directory. This could be misused to create malicious executable or configuration files and make the user execute them under specific consequences.

This is the same issue as in OpenSSH, tracked as CVE-2019-6111.

Patch / fix

  • julia libssh_jll 0.11.4+0
  • Red Hat Red Hat Enterprise Linux 10 0:0.12.0-2.el10
  • Red Hat Red Hat Enterprise Linux 9 0:0.10.4-18.el9
  • libssh Debian 12 0.10.6-0+deb12u3
  • libssh Debian 13 0.11.5-0+deb13u1
  • libssh Debian 14 0.12.0-1

debian advisories DEBIAN-CVE-2026-0964

  • libssh Ubuntu 22.04 LTS 0.9.6-2ubuntu0.22.04.6
  • libssh Ubuntu 24.04 LTS 0.10.6-2ubuntu0.3
  • libssh Ubuntu 25.10 0.11.2-1ubuntu0.2
  • libssh Ubuntu Pro 16.04 LTS 0.6.3-4.3ubuntu0.6+esm4
  • libssh Ubuntu Pro 18.04 LTS 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm6
  • libssh Ubuntu Pro 20.04 LTS 0.9.3-2ubuntu2.5+esm3

ubuntu advisories UBUNTU-CVE-2026-0964

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libssh RHEL 9 0.10.4-18.el9
  • libssh-config RHEL 9 0.10.4-18.el9
  • libssh RHEL 10.2 0.12.0-2.el10
  • libssh-config RHEL 10.2 0.12.0-2.el10

red hat advisories RHSA-2026:18683RHSA-2026:18160

  • libssh SLE Micro 5.5, SLE Micro 5.4, SLE Micro 5.3 0.9.8-150400.3.17.1
  • libssh SLE Module for Basesystem 15 SP7, openSUSE Leap 15.6 0.9.8-150600.11.9.1
  • libssh Linux Micro 6.1 0.10.6-slfo.1.1_4.1
  • libssh Linux Micro 6.0 0.10.6-4.1
  • libssh SLE Micro 5.2 0.9.8-150200.13.15.1
  • libssh SLES LTSS Extended Security 12 SP5 0.6.3-12.28.1
  • libssh SLES LTSS Extended Security 12 SP5 0.9.8-3.21.1

suse advisories SUSE-SU-2026:1565-1SUSE-SU-2026:1344-1SUSE-SU-2026:0779-1SUSE-SU-2026:0778-1SUSE-SU-2026:20531-1SUSE-SU-2026:20524-1

  • libssh openSUSE Tumbleweed 0.11.4-1.1

opensuse advisories openSUSE-SU-2026:10203-1

  • libssh AlmaLinux 10 0.12.0-2.el10
  • libssh-config AlmaLinux 10 0.12.0-2.el10
  • libssh AlmaLinux 9 0.10.4-18.el9
  • libssh-config AlmaLinux 9 0.10.4-18.el9

almalinux advisories ALSA-2026:18160ALSA-2026:18683

  • libssh Rocky Linux 10 0.12.0-2.el10
  • libssh Rocky Linux 9 0.10.4-18.el9

rocky linux advisories RLSA-2026:18160RLSA-2026:18683

  • libssh Alpine 3.23 0.11.4-r0
  • libssh Alpine 3.24 0.12.0-r0

alpine advisories ALPINE-CVE-2026-0964

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libssh Azure Linux 3.0 0.10.6-7

azure linux advisories AZL-81098

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-0964 updated cvss 5.0

libssh: Improper sanitation of paths received from SCP servers

  • Red Hat Enterprise Linux 8 libssh, libssh-config Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 9) libssh-devel 0.10.4-18.el9, libssh-debuginfo 0.10.4-18.el9, libssh-debugsource 0.10.4-18.el9
    fixed: vendor fix RHSA-2026:18683
  • Red Hat Enterprise Linux AppStream (v. 10) libssh-devel 0.12.0-2.el10, libssh-debuginfo 0.12.0-2.el10, libssh-debugsource 0.12.0-2.el10
    fixed: vendor fix RHSA-2026:18160
  • Red Hat Enterprise Linux BaseOS (v. 9) libssh 0.10.4-18.el9, libssh-config 0.10.4-18.el9
    fixed: vendor fix RHSA-2026:18683
  • Red Hat Enterprise Linux BaseOS (v. 10) libssh 0.12.0-2.el10, libssh-config 0.12.0-2.el10
    fixed: vendor fix RHSA-2026:18160
  • Red Hat Enterprise Linux 6 libssh2 Red Hat Enterprise Linux 7 libssh2 Red Hat Hardened Images libssh2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
NVD 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
OSV 3.0 5.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
OSV 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
julia libssh_jll
<0.11.4+0
0.11.4+0

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.