RHEL 9 : Satellite 6.18.7.1 Async Update (Important) (RHSA-2026:42151)

high Nessus Plugin ID 328355

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:42151 advisory.

Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs provisioning and configuration management of predefined standard operating environments.

Security Fix(es):

* yggdrasil-worker-forwarder: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)

* yggdrasil-worker-forwarder: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

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

* yggdrasil-worker-forwarder: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)

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

* python3.12-pulpcore: pulpcore: relative_path_validator bypass via directory traversal in FilesystemExport (CVE-2026-12701)

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 affected python3.12-pulpcore and / or yggdrasil-worker-forwarder packages.

Plugin Details

Severity: High

ID: 328355

File Name: redhat-RHSA-2026-42151.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/20/2026

Updated: 7/20/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.81

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-33811

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:python3.12-pulpcore, p-cpe:/a:redhat:enterprise_linux:yggdrasil-worker-forwarder

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2026

Vulnerability Publication Date: 3/5/2026

Reference Information

CVE: CVE-2026-12701, CVE-2026-25679, CVE-2026-27145, CVE-2026-33186, CVE-2026-33811, CVE-2026-39821

CWE: 1286, 1289, 1341, 22, 551, 606

RHSA: 2026:42151

Detections

Analytics