CVE-2026-106582
In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.
CVE-2026-106582 is fixed in 21 products on 1 platform, first by openssh-client 1:10.2p1-2ubuntu3.8, released October 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
3.7
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
In sshd and ssh in OpenSSH before 10.6, an LZ77 dictionary coder can be used even though this is contraindicated by the arXiv 2609.07709 "Crossing the Streams" findings.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openssh · Debian 14 | 1:10.6p1-1 | DEBIAN-CVE-2026-106582 | Oct 12, 2026 |
| openssh · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-client · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | openssh-client 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| openssh-client · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | openssh-client 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| openssh-client · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-client 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| openssh-client-gssapi · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-client-gssapi 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| openssh-clients · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-clients-debuginfo · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-debuginfo · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-debugsource · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-gssapi · Debian 14 | 1:10.6p1-1 | DEBIAN-CVE-2026-106582 | Oct 12, 2026 |
| openssh-keycat · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-keycat-debuginfo · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | openssh-server 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| openssh-server · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | openssh-server 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| openssh-server · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-server 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| openssh-server · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-server-debuginfo · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-server-gssapi · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-server-gssapi 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| openssh-sftp-server · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | openssh-sftp-server 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| openssh-sftp-server · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | openssh-sftp-server 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| openssh-sftp-server · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-sftp-server 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| openssh-sk-dummy · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-sk-dummy-debuginfo · amzn 2023 | 9.9p1-16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| openssh-tests · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | openssh-tests 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| openssh-tests · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | openssh-tests 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| openssh-tests · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | openssh-tests 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| pam_ssh_agent_auth · amzn 2023 | 0.10.4-10.16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| pam_ssh_agent_auth-debuginfo · amzn 2023 | 0.10.4-10.16.amzn2023.0.1 | ALAS2023-2026-3354 | Nov 7, 2026 |
| ssh · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | ssh 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| ssh · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | ssh 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| ssh · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | ssh 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
| ssh-askpass-gnome · Ubuntu 22.04.1 LTS (jammy) | 1:8.9p1-3ubuntu0.18 | ssh-askpass-gnome 1:8.9p1-3ubuntu0.18 | Oct 19, 2026 |
| ssh-askpass-gnome · Ubuntu 24.04.5 LTS (noble) | 1:9.6p1-3ubuntu13.20 | ssh-askpass-gnome 1:9.6p1-3ubuntu13.20 | Oct 19, 2026 |
| ssh-askpass-gnome · Ubuntu 26.04.1 LTS (resolute) | 1:10.2p1-2ubuntu3.8 | ssh-askpass-gnome 1:10.2p1-2ubuntu3.8 | Oct 6, 2026 |
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