CVE-2026-35414
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
CVE-2026-35414 is fixed in 23 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
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0022
12th percentile
This update for openssh fixes the following issues - CVE-2026-3497: information disclosure or denial of service due to uninitialized variables (bsc#1259642). - CVE-2026-35385: a file downloaded by scp may be installed setuid or setgid (bsc#1261427). - CVE-2026-35388: omitted connection multiplexing confirmation for proxy-mode multiplexing sessions (bsc#1261441). - CVE-2026-35414: mishandling of authorized_keys principals option (bsc#1261430). - potential security issue when validating mac (bsc#1264568).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 12.15 (bookworm) | 1:9.2p1-2+deb12u10 | DEBIAN-CVE-2026-35414 | Apr 2, 2026 |
| openssh · Debian 13.5 (trixie) | 1:10.0p1-7+deb13u3 | DEBIAN-CVE-2026-35414 | Apr 2, 2026 |
| openssh · Debian 14 | 1:10.3p1-1 | DEBIAN-CVE-2026-35414 | 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 · sles 15.6 | 9.6p1-150600.6.42.1 | SUSE-SU-2026:2371-1 | Jun 11, 2026 |
| openssh · sles 15.7 | 9.6p1-150600.6.42.1 | SUSE-SU-2026:2371-1 | Jun 11, 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-askpass-gnome · sles 15.6 | 9.6p1-150600.6.42.1 | SUSE-SU-2026:2371-1 | Jun 11, 2026 |
| openssh-askpass-gnome · sles 15.7 | 9.6p1-150600.6.42.1 | SUSE-SU-2026:2371-1 | Jun 11, 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 18.04.6 LTS (bionic) | 1:7.6p1-4ubuntu0.7+esm6 | openssh-client 1:7.6p1-4ubuntu0.7+esm6 | Aug 11, 2026 |
| openssh-client · Ubuntu 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | openssh-client 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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 18.04.6 LTS (bionic) | 1:7.6p1-4ubuntu0.7+esm6 | openssh-server 1:7.6p1-4ubuntu0.7+esm6 | Aug 11, 2026 |
| openssh-server · Ubuntu 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | openssh-server 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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 18.04.6 LTS (bionic) | 1:7.6p1-4ubuntu0.7+esm6 | openssh-sftp-server 1:7.6p1-4ubuntu0.7+esm6 | Aug 11, 2026 |
| openssh-sftp-server · Ubuntu 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | openssh-sftp-server 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | openssh-tests 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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 18.04.6 LTS (bionic) | 1:7.6p1-4ubuntu0.7+esm6 | ssh 1:7.6p1-4ubuntu0.7+esm6 | Aug 11, 2026 |
| ssh · Ubuntu 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | ssh 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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 18.04.6 LTS (bionic) | 1:7.6p1-4ubuntu0.7+esm6 | ssh-askpass-gnome 1:7.6p1-4ubuntu0.7+esm6 | Aug 11, 2026 |
| ssh-askpass-gnome · Ubuntu 20.04 LTS (focal) | 1:8.2p1-4ubuntu0.13+esm3 | ssh-askpass-gnome 1:8.2p1-4ubuntu0.13+esm3 | Aug 11, 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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