RHEL 9 : tomcat (RHSA-2026:92870)

critical Nessus Plugin ID 373954

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Synopsis

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

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:92870 advisory.

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

* tomcat: Apache Tomcat: Security constraint bypass due to improper access control (CVE-2026-65182)

* tomcat: Apache Tomcat: Access control bypass due to off-by-one error in RewriteValve [N] flag processing (CVE-2026-65927)

* tomcat: Apache Tomcat: Improper Input Validation allows HTTP/2 no-authority bypass of strict SNI validation (CVE-2026-65637)

* tomcat: Apache Tomcat: Improper Authentication due to principal lookup failure (CVE-2026-68569)

* tomcat: Apache Tomcat: Authentication bypass via limited replay attack in DIGEST authenticator (CVE-2026-65905)

* tomcat: Apache Tomcat: Unauthorized resource access via FORM authentication bypass (CVE-2026-68525)

* tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak (CVE-2026-68763)

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 tomcat package based on the guidance in RHSA-2026:92870.

Plugin Details

Severity: Critical

ID: 373954

File Name: redhat-RHSA-2026-92870.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/30/2026

Updated: 10/30/2026

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: 6.9

Percentile: 96.32

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-65905

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:9.6, p-cpe:/a:redhat:enterprise_linux:tomcat-admin-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat-docs-webapp, p-cpe:/a:redhat:enterprise_linux:tomcat-el-3.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-jsp-2.3-api, p-cpe:/a:redhat:enterprise_linux:tomcat-lib, p-cpe:/a:redhat:enterprise_linux:tomcat-servlet-4.0-api, p-cpe:/a:redhat:enterprise_linux:tomcat-webapps, p-cpe:/a:redhat:enterprise_linux:tomcat

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: 10/29/2026

Vulnerability Publication Date: 8/18/2026

Reference Information

CVE: CVE-2026-65182, CVE-2026-65637, CVE-2026-65905, CVE-2026-65927, CVE-2026-68525, CVE-2026-68569, CVE-2026-68763

CWE: 193, 294, 305, 444, 551, 770

RHSA: 2026:92870

Detections

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