CVE-2026-35386
openssh: In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line
CVE-2026-35386 is fixed in 22 products on 1 platform, first by openssh-client 1:8.9p1-3ubuntu0.15, released April 2, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.1
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0032
25th percentile
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 12.15 (bookworm) | 1:9.2p1-2+deb12u10 | DEBIAN-CVE-2026-35386 | Apr 2, 2026 |
| openssh · Debian 13.5 (trixie) | 1:10.0p1-7+deb13u3 | DEBIAN-CVE-2026-35386 | Apr 2, 2026 |
| openssh · Debian 14 | 1:10.3p1-1 | DEBIAN-CVE-2026-35386 | Apr 2, 2026 |
| openssh · RHEL 10 | 9.9p1-7.el10_0.3 | RHSA-2026:12389 | Apr 2, 2026 |
| openssh · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh · RHEL 9 | 0:9.9p1-7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| openssh · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh · almalinux 9 | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| openssh · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh · ol 9 | 0:8.7p1-49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| openssh · rocky 10 | 0:9.9p1-23.el10_2.rocky.0.1 | RLSA-2026:19069 | May 29, 2026 |
| openssh · rocky 8 | 0:8.0p1-29.el8_10 | RLSA-2026:13383 | May 6, 2026 |
| openssh · rocky 9 | 0:9.9p1-7.el9_8.rocky.0.1 | RLSA-2026:19219 | May 28, 2026 |
| openssh-askpass · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-askpass · RHEL 9 | 0:9.9p1-7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| openssh-askpass · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh-askpass · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-askpass · almalinux 9 | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| openssh-askpass · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh-askpass · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-askpass · ol 9 | 0:8.7p1-49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| openssh-cavs · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-cavs · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-cavs · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-client · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | openssh-client 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| openssh-client · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | openssh-client 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| openssh-client · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-client 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-client · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-client 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| openssh-client-gssapi · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-client-gssapi 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-client-gssapi · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-client-gssapi 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| openssh-clients · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-clients · RHEL 9 | 0:9.9p1-7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| openssh-clients · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh-clients · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-clients · almalinux 9 | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| openssh-clients · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-clients · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh-clients · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-clients · ol 9 | 0:8.7p1-49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| openssh-clients-debuginfo · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-debuginfo · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-debugsource · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-keycat · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-keycat · RHEL 9 | 0:9.9p1-7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| openssh-keycat · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh-keycat · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-keycat · almalinux 9 | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| openssh-keycat · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-keycat · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh-keycat · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-keycat · ol 9 | 0:8.7p1-49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| openssh-keycat-debuginfo · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-keysign · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh-keysign · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh-ldap · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-ldap · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-ldap · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-server · RHEL 8 | 0:8.0p1-29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| openssh-server · RHEL 9 | 0:9.9p1-7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| openssh-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | openssh-server 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| openssh-server · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | openssh-server 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| openssh-server · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-server 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-server · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-server 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| openssh-server · almalinux 10 | 9.9p1-23.el10_2.alma.1 | ALSA-2026:19069 | May 19, 2026 |
| openssh-server · almalinux 8 | 8.0p1-29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| openssh-server · almalinux 9 | 9.9p1-7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| openssh-server · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-server · ol 10 | 0:9.9p1-14.0.1.el10_1 | ELSA-2026-13380 | May 5, 2026 |
| openssh-server · ol 8 | 0:8.0p1-29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| openssh-server · ol 9 | 0:8.7p1-49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| openssh-server-debuginfo · amzn 2023 | 8.7p1-8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| openssh-server-gssapi · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-server-gssapi 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-server-gssapi · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-server-gssapi 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| openssh-sftp-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | openssh-sftp-server 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| openssh-sftp-server · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | openssh-sftp-server 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| openssh-sftp-server · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-sftp-server 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-sftp-server · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-sftp-server 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| openssh-tests · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | openssh-tests 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| openssh-tests · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | openssh-tests 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| openssh-tests · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | openssh-tests 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| openssh-tests · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | openssh-tests 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| pam_ssh_agent_auth · RHEL 8 | 0:0.10.3-7.29.el8_10 | RHSA-2026:13383 | May 15, 2026 |
| pam_ssh_agent_auth · RHEL 9 | 0:0.10.4-7.7.el9_8 | RHSA-2026:19219 | May 15, 2026 |
| pam_ssh_agent_auth · almalinux 8 | 0.10.3-7.29.el8_10 | ALSA-2026:13383 | May 4, 2026 |
| pam_ssh_agent_auth · almalinux 9 | 0.10.4-7.7.el9_8.alma.1 | ALSA-2026:19219 | May 19, 2026 |
| pam_ssh_agent_auth · amzn 2023 | 0.10.4-4.8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| pam_ssh_agent_auth · ol 8 | 0:0.10.3-7.29.0.1.el8_10 | ELSA-2026-13383 | May 5, 2026 |
| pam_ssh_agent_auth · ol 9 | 0:0.10.4-5.49.0.1.el9_7 | ELSA-2026-13381 | May 5, 2026 |
| pam_ssh_agent_auth-debuginfo · amzn 2023 | 0.10.4-4.8.amzn2023.0.18 | ALAS2023-2026-1745 | May 25, 2026 |
| ssh · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | ssh 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| ssh · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | ssh 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| ssh · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | ssh 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| ssh · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | ssh 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
| ssh-askpass-gnome · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.15 | ssh-askpass-gnome 1:8.9p1-3ubuntu0.15 | Apr 2, 2026 |
| ssh-askpass-gnome · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.16 | ssh-askpass-gnome 1:9.6p1-3ubuntu13.16 | Apr 2, 2026 |
| ssh-askpass-gnome · Ubuntu 25.10 (questing) | 1:10.0p1-5ubuntu5.4 | ssh-askpass-gnome 1:10.0p1-5ubuntu5.4 | Apr 2, 2026 |
| ssh-askpass-gnome · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.2 | ssh-askpass-gnome 1:10.2p1-2ubuntu3.2 | Apr 2, 2026 |
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