SB20260728131 - Anolis OS update for openssh

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Main Vulnerability Database SB20260728131

SB20260728131 - Anolis OS update for openssh

Published: July 28, 2026

Security Bulletin ID SB20260728131
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 60% Low 40%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Path traversal (CVE-ID: CVE-2026-59995)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to write files to an unexpected location.

The vulnerability exists due to improper path restriction in sftp(1) when downloading files on the command line using a remote path and a local dot destination. A remote attacker can operate a malicious server to write files to an unexpected location.



2) Path traversal (CVE-ID: CVE-2026-59996)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to write files outside the intended target directory.

The vulnerability exists due to improper path restriction in scp(1) when copying files between two remote destinations. A remote attacker can operate a malicious server to write files outside the intended target directory.


3) Improper access control (CVE-ID: CVE-2026-59999)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to enable tunneling despite forwarding restrictions.

The vulnerability exists due to improper access control in sshd(8) when DisableForwarding=yes and PermitTunnel=yes are configured together. A remote privileged user can use tunneling despite forwarding restrictions to enable tunneling despite forwarding restrictions.

Exploitation requires configurations where PermitTunnel is enabled.


4) Resource exhaustion (CVE-ID: CVE-2026-60000)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource handling in sshd(8) when processing pre-authentication GSSAPI requests. A remote attacker can send crafted authentication attempts to cause a denial of service.

Only configurations with GSSAPIAuthentication enabled are affected.


5) Protection mechanism failure (CVE-ID: CVE-2026-60001)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to weaken authentication rate limiting.

The vulnerability exists due to improper enforcement of security policy in sshd(8) when handling authentication attempts. A remote attacker can send authentication attempts to weaken authentication rate limiting.

The issue affects cases where the minimum authentication delay was not enforced.


Remediation

Install update from vendor's website.

References