Detections
Analytics

Fedora 44 : opkssh (2026-a7570524a7)

critical Nessus Plugin ID 325836

Synopsis

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

Description

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a7570524a7 advisory.

 Update to opkssh 0.15.0.

 This release fixes several CVEs in bundled/vendored dependencies:

 - CVE-2026-39829: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters
 - CVE-2026-39835: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate
 - CVE-2026-39833: golang.org/x/crypto/ssh/agent: Security bypass due to unenforced key confirmation
 - CVE-2026-27145: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (fixed via the Go toolchain used to build this package)


Tenable has extracted the preceding description block directly from the Fedora 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 opkssh package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-a7570524a7

Plugin Details

Severity: Critical

ID: 325836

File Name: fedora_2026-a7570524a7.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/9/2026

Updated: 7/9/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.15

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-39833

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:44, p-cpe:/a:fedoraproject:fedora:opkssh

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/2/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-27145, CVE-2026-39829, CVE-2026-39833, CVE-2026-39835