RHEL 10 : go-fdo-server (RHSA-2026:46395)

high Nessus Plugin ID 330062

Synopsis

The remote Red Hat host is missing one or more security updates for go-fdo-server.

Description

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:46395 advisory.

This package provides a server-side implementation of the FIDO Device Onboard (FDO) specification, written in Go. FDO is an open standard for the late binding of device credentials, allowing for automated and secure on-boarding of devices when they are first powered on in their final location.

Security Fix(es):

* golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

* crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL go-fdo-server package based on the guidance in RHSA-2026:46395.

Plugin Details

Severity: High

ID: 330062

File Name: redhat-RHSA-2026-46395.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/27/2026

Updated: 7/27/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.14

Vendor

Vendor Severity: Important

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-2026-39821

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10.2, p-cpe:/a:redhat:enterprise_linux:go-fdo-server-manufacturer, p-cpe:/a:redhat:enterprise_linux:go-fdo-server-owner, p-cpe:/a:redhat:enterprise_linux:go-fdo-server-rendezvous, p-cpe:/a:redhat:enterprise_linux:go-fdo-server

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/27/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-27145, CVE-2026-39821

CWE: 1289, 606

RHSA: 2026:46395

Detections

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