libssh: A flaw was found in libssh
CVE-2026-59849 is fixed in 6 products on 1 platform, first by libssh-4 0.11.3-1ubuntu2.1, released July 21, 2026. It is not reported as exploited. Patch Radar priority: High.
A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libssh · Debian 13.5 (trixie) | 0.11.5-0+deb13u1 | DEBIAN-CVE-2026-59849 | Jul 31, 2026 |
| libssh · Debian 14 | 0.12.1-1 | DEBIAN-CVE-2026-59849 | Jul 31, 2026 |
| libssh · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh · RHEL 10 | 0.12.0-3.el10_2 | RHSA-2026:55855 | Aug 18, 2026 |
| libssh · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
| libssh · opensuse-leap 16.0 | 0.11.5-160000.1.1 | OPENSUSE-SU-2026:21444-1 | Jul 25, 2026 |
| libssh · rocky 10 | 0:0.12.0-3.el10_2 | RLSA-2026:55855 | Aug 18, 2026 |
| libssh · sles 16.0 | 0.11.5-160000.1.1 | SUSE-SU-2026:22956-1 | Jul 25, 2026 |
| libssh-4 · Ubuntu 26.04.1 LTS (resolute) | 0.11.3-1ubuntu2.1 | libssh-4 0.11.3-1ubuntu2.1 | Jul 21, 2026 |
| libssh-config · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-config · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh-config · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
| libssh-debuginfo · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-debugsource · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-devel · Fedora 43 | 0.11.5-1.fc43 | FEDORA-2026-063CAA9112 | Jul 21, 2026 |
| libssh-devel · almalinux 10 | 0.12.0-3.el10_2 | ALSA-2026:55855 | Aug 17, 2026 |
| libssh-devel · ol 10 | 0:0.12.0-3.el10_2 | ELSA-2026-55855 | Aug 17, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.