RHEL 10 : yggdrasil (RHSA-2026:97288)

high Nessus Plugin ID 378206

Synopsis

The remote Red Hat host is missing a security update.

Description

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:97288 advisory.

yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child worker process, exchanging data with its worker processes through a D-Bus message broker.

Security Fix(es):

* crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137)

Bug Fix(es) and Enhancement(s):

* [Azure][RHEL-10][yggd]failed to publish message: not Connected (JIRA:RHEL-135848)

* Set the MQTT LastWill message each time the client connects to the broker (JIRA:RHEL-166873)

* Yggdrasil: add client-id subcommand to yggctl (JIRA:RHEL-178895)

* Yggdrasil SQL Injection Through DBus (JIRA:RHEL-90808)

* fix: set HTTP client timeout and max idle connection timeout (JIRA:RHEL-168913)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 10 Release Notes linked from 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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected yggdrasil and / or yggdrasil-devel packages.

Plugin Details

Severity: High

ID: 378206

File Name: redhat-RHSA-2026-97288.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/10/2026

Updated: 11/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.71

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2026-27137

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:N/A:H

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10.3, p-cpe:/a:redhat:enterprise_linux:yggdrasil-devel, p-cpe:/a:redhat:enterprise_linux:yggdrasil

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: 11/10/2026

Vulnerability Publication Date: 3/5/2026

Reference Information

CVE: CVE-2026-27137

CWE: 295

RHSA: 2026:97288

Detections

Analytics