RHEL 9 : RHOSO 18.0 os-diff (RHSA-2026:90332)

medium Nessus Plugin ID 372145

Synopsis

The remote Red Hat host is missing one or more security updates for RHOSO 18.0 os-diff.

Description

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:90332 advisory.

Security Fix(es):

* golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)

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

* golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)

* golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504)

* golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)

* golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)

* golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)

* golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)

* golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)

* net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669)

* golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031)

* golang: Denial of Service via memory limit bypass in multipart form parsing (CVE-2026-94440)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page 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 RHOSO 18.0 os-diff package based on the guidance in RHSA-2026:90332.

Plugin Details

Severity: Medium

ID: 372145

File Name: redhat-RHSA-2026-90332.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/26/2026

Updated: 10/26/2026

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: High

Score: 7.3

Percentile: 98.16

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-2026-56858

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:golang-github-openstack-k8s-operators-os-diff

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: 10/26/2026

Vulnerability Publication Date: 6/2/2026

Reference Information

CVE: CVE-2026-111943, CVE-2026-27145, CVE-2026-33818, CVE-2026-42504, CVE-2026-56853, CVE-2026-56858, CVE-2026-56860, CVE-2026-56862, CVE-2026-78667, CVE-2026-78669, CVE-2026-94440, CVE-2026-97031

CWE: 1050, 295, 606, 770, 776, 79

RHSA: 2026:90332

Detections

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