Vulnerability · Published Oct 6, 2026 · Assigned by mitre
CVE-2026-106582
Low 3.7
In plain English
A low-severity security flaw in OpenSSH from OpenBSD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 92.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | openssh | no fix listed | DEBIAN-CVE-2026-106582 |
| Debian:13 | openssh | no fix listed | DEBIAN-CVE-2026-106582 |
| Debian:14 | openssh | 1:10.6p1-1 | DEBIAN-CVE-2026-106582 |
| Debian:14 | openssh-gssapi | 1:10.6p1-1 | DEBIAN-CVE-2026-106582 |
| Ubuntu:22.04:LTS | openssh | 1:8.9p1-3ubuntu0.18 | USN-8928-1 |
| Ubuntu:22.04:LTS | openssh | 1:8.9p1-3ubuntu0.18 | UBUNTU-CVE-2026-106582 |
| Ubuntu:24.04:LTS | openssh | 1:9.6p1-3ubuntu13.20 | USN-8928-1 |
| Ubuntu:24.04:LTS | openssh | 1:9.6p1-3ubuntu13.20 | UBUNTU-CVE-2026-106582 |
| Ubuntu:26.04:LTS | openssh | 1:10.2p1-2ubuntu3.8 | USN-8928-1 |
| Ubuntu:26.04:LTS | openssh | 1:10.2p1-2ubuntu3.8 | UBUNTU-CVE-2026-106582 |
| Ubuntu:26.10 | openssh | 1:10.5p1-1ubuntu3.1 | UBUNTU-CVE-2026-106582 |
| Ubuntu:26.10 | openssh | 1:10.5p1-1ubuntu3.1 | USN-8937-1 |
| Ubuntu:26.10 | openssh-gssapi | 1:10.5p1-1ubuntu3.1 | USN-8937-1 |
| Ubuntu:26.10 | openssh-gssapi | 1:10.5p1-1ubuntu3.1 | UBUNTU-CVE-2026-106582 |
| Ubuntu:22.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-106582 |
| Ubuntu:24.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-106582 |
| Ubuntu:26.04:LTS | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-106582 |
| Ubuntu:26.10 | openssh-ssh1 | no fix listed | UBUNTU-CVE-2026-106582 |
Affected products (as reported)
Weakness: CWE-514 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N