SB2026102851 - Anolis OS update for openssh

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Main Vulnerability Database SB2026102851

SB2026102851 - Anolis OS update for openssh

Published: October 28, 2026

Security Bulletin ID SB2026102851
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Observable discrepancy (CVE-ID: CVE-2026-106582)

CWE-ID: CWE-203 - Observable discrepancy

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to recover secret plaintext carried in another channel of an SSH connection.

The vulnerability exists due to observable ciphertext-length discrepancies in the shared LZ77 compression context used by ssh and sshd when multiplexed channels carry both secrets and attacker-controlled input. A remote attacker can introduce chosen plaintext into one channel and analyze the resulting ciphertext lengths to infer secrets transmitted through another channel.


Remediation

Install update from vendor's website.

References