RHEL 10 / 8 / 9 : Red Hat JBoss Web Server 7.0.3 (RHSA-2026:93618)

critical Nessus Plugin ID 375539

Synopsis

The remote Red Hat host is missing one or more security updates for Red Hat JBoss Web Server 7.0.3.

Description

The remote Redhat Enterprise Linux 10 / 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:93618 advisory.

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector (mod_cluster), the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library.

This release of Red Hat JBoss Web Server 7.0.3 serves as a replacement for Red Hat JBoss Web Server 7.0.2.
This release includes bug fixes, enhancements and component upgrades, which are documented in the Release Notes that are linked to in the References section.

Security Fix(es):

* mod_cluster-core: mod_cluster Advertise Listener: unauthenticated DoS via crafted multicast datagram (CVE-2026-76166)
* jws7-tomcat-native: Apache Tomcat Native: Client certificate verification requirements can be down- graded via race condition (CVE-2026-86247)
* jws7-tomcat: Apache Tomcat: Denial of Service via AJP request (CVE-2026-78383)
* jws7-tomcat: Apache Tomcat: Denial of Service via busy wait during WebSocket close (CVE-2026-77791)
* jws7-tomcat: Apache Tomcat: HTTP/2 request smuggling due to header mix-up (CVE-2026-86350)
* jws7-tomcat: Apache Tomcat: Authentication Bypass in WebSocket Endpoints (CVE-2026-76183)
* jws7-tomcat: Apache Tomcat: Denial of Service due to lost asynchronous WebSocket write timeouts (CVE-2026-79677)
* jws7-tomcat: Apache Tomcat: TLS implementations ignore Certificate Revocation Lists (CVE-2026-73581)
* jws7-tomcat: Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled (CVE-2026-86248)
* jws7-tomcat-native: Apache Tomcat Native: Denial of Service via buffer over-read during TLS handshake (CVE-2026-86243)
* jws7-tomcat-native: Apache Tomcat Native: Weakened TLS connection security via insecure default configuration (CVE-2026-86246)

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 Red Hat JBoss Web Server 7.0.3 package based on the guidance in RHSA-2026:93618.

Plugin Details

Severity: Critical

ID: 375539

File Name: redhat-RHSA-2026-93618.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/3/2026

Updated: 11/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.53

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-86248

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:jws7-mod_cluster-tomcat, p-cpe:/a:redhat:enterprise_linux:jws7-mod_cluster, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-admin-webapps, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-docs-webapp, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-el-5.0-api, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-javadoc, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-jsp-3.1-api, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-lib, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-native, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-selinux, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-servlet-6.0-api, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:jws7-tomcat

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: 11/3/2026

Vulnerability Publication Date: 8/19/2026

Reference Information

CVE: CVE-2026-73581, CVE-2026-76166, CVE-2026-76183, CVE-2026-77791, CVE-2026-78383, CVE-2026-79677, CVE-2026-86243, CVE-2026-86246, CVE-2026-86247, CVE-2026-86248, CVE-2026-86350

CWE: 1050, 1188, 126, 289, 295, 303, 366, 444, 476, 770, 772

RHSA: 2026:93618

Detections

Analytics