RHEL 10 : tomcat9 (RHSA-2026:67163)

medium Nessus Plugin ID 345588

Synopsis

The remote Red Hat host is missing one or more security updates for tomcat9.

Description

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:67163 advisory.

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Tomcat is developed in an open and participatory environment and released under the Apache Software License version 2.0. Tomcat is intended to be a collaboration of the best-of-breed developers from around the world.

Security Fix(es):

* Apache Tomcat: Apache Tomcat: Improper Input Validation vulnerability due to incomplete fix (CVE-2026-32990)

* tomcat-coyote: Apache Tomcat: Authentication bypass via digest authentication (CVE-2026-43512)

* tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated (CVE-2026-41293)

* tomcat-coyote: Apache Tomcat: Information disclosure due to HTTP Authentication Header exposure during WebSocket authentication. (CVE-2026-42498)

* tomcat-coyote: tomcat: Improper Authorization allows security bypass (CVE-2026-43515)

* tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm (CVE-2026-43513)

* tomcat: Apache Tomcat: Authentication bypass via missing critical step in JNDIRealm GSSAPI configuration (CVE-2026-55957)

* tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve (CVE-2026-59083)

* tomcat: Apache Tomcat: Insufficient documentation for EncryptInterceptor may lead to insecure configurations (CVE-2026-59084)

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 tomcat9 package based on the guidance in RHSA-2026:67163.

Plugin Details

Severity: Medium

ID: 345588

File Name: redhat-RHSA-2026-67163.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/14/2026

Updated: 9/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.12

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-2026-43512

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 5.5

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-32990

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux_eus:10.0, p-cpe:/a:redhat:enterprise_linux:tomcat9-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat9-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat9-el-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-jsp-2.3-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-lib, p-cpe:/a:redhat:enterprise_linux:tomcat9-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat9-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat9

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: 9/14/2026

Vulnerability Publication Date: 3/6/2025

Reference Information

CVE: CVE-2026-32990, CVE-2026-41293, CVE-2026-42498, CVE-2026-43512, CVE-2026-43513, CVE-2026-43515, CVE-2026-55957, CVE-2026-59083, CVE-2026-59084

CWE: 1188, 1286, 178, 184, 201, 303, 305, 551, 807

RHSA: 2026:67163

Detections

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