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AlmaLinux 8 : openssh (ALSA-2026:69266)

high Nessus Plugin ID 348604

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Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:69266 advisory.

 * openssh: OpenSSH: sftp client allows attacker to control downloaded file location (CVE-2026-59995)
 * openssh: OpenSSH sshd: Security bypass due to incorrect handling of forwarding and tunneling options (CVE-2026-59999)
 * openssh: OpenSSH: Information disclosure and data corruption via use-after-free in ssh client (CVE-2026-73282)


 Bug Fix(es) and Enhancement(s):

 * Incomplete backport of CVE-2023-38408 in AlmaLinux 8 openssh (JIRA:AlmaLinux-234763)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2026:69266

https://errata.almalinux.org/8/ALSA-2026-69266.html

Plugin Details

Severity: High

ID: 348604

File Name: alma_linux_ALSA-2026-69266.nasl

Version: 1.1

Type: Local

Published: 9/21/2026

Updated: 9/21/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-59999

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:openssh-askpass, p-cpe:/a:alma:linux:openssh-cavs, p-cpe:/a:alma:linux:openssh-clients, p-cpe:/a:alma:linux:openssh-keycat, p-cpe:/a:alma:linux:openssh-ldap, p-cpe:/a:alma:linux:openssh-server, p-cpe:/a:alma:linux:openssh, p-cpe:/a:alma:linux:pam_ssh_agent_auth

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/21/2026

Vulnerability Publication Date: 7/8/2026

Reference Information

CVE: CVE-2026-59995, CVE-2026-59999, CVE-2026-73282

CWE: 22, 358, 825

RHSA: 2026:69266