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tomcat: Apache Tomcat: Improper Authorization Allows Security Constraint Bypass

🗓️ 14 Jul 2026 18:04:24Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 10 Views

A flaw in Apache Tomcat improperly handles default servlet access, bypassing method restrictions and risking unauthorized access.

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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities found in IBM ApplinX.
24 Jul 202606:20
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ATTACKERKB		CVE-2026-55956
29 Jun 202620:46
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Tenable Nessus		Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2026-1945)
20 Jul 202600:00
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Tenable Nessus		Amazon Linux 2023 : tomcat10, tomcat10-admin-webapps, tomcat10-el-5.0-api (ALAS2023-2026-1946)
20 Jul 202600:00
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Tenable Nessus		Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-027 (ALASTOMCAT9-2026-027)
20 Jul 202600:00
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Tenable Nessus		openSUSE 16: tomcat / tomcat-admin-webapps / tomcat-el-3_0-api / tomcat-embed / etc (openSUSE-SU-2026:21327-1)
16 Jul 202600:00
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Tenable Nessus		openSUSE 16: tomcat10 / tomcat10-admin-webapps / tomcat10-el-5_0-api / etc (openSUSE-SU-2026:21328-1)
16 Jul 202600:00
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Tenable Nessus		openSUSE 16: tomcat11 / tomcat11-admin-webapps / tomcat11-el-6_0-api / etc (openSUSE-SU-2026:21329-1)
16 Jul 202600:00
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nessus
Tenable Nessus		RHEL 10 / 8 / 9 : Red Hat JBoss Web Server 7.0.0 security (Important) (RHSA-2026:39188)
17 Jul 202600:00
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Tenable Nessus		RHEL 10 / 8 / 9 : Red Hat JBoss Web Server 6.2.4 (RHSA-2026:43401)
22 Jul 202600:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8noarchjws7-tomcat11.0.21-5.redhat_00004.1.el8jwsjws7-tomcat-11.0.21-5.redhat_00004.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat11.0.21-5.redhat_00004.1.el9jwsjws7-tomcat-11.0.21-5.redhat_00004.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat11.0.21-5.redhat_00004.1.el10jwsjws7-tomcat-11.0.21-5.redhat_00004.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-admin-webapps11.0.21-5.redhat_00004.1.el8jwsjws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat-admin-webapps11.0.21-5.redhat_00004.1.el9jwsjws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat-admin-webapps11.0.21-5.redhat_00004.1.el10jwsjws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-docs-webapp11.0.21-5.redhat_00004.1.el8jwsjws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el8jws.noarch.rpm
Red Hat Enterprise Linux9noarchjws7-tomcat-docs-webapp11.0.21-5.redhat_00004.1.el9jwsjws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el9jws.noarch.rpm
Red Hat Enterprise Linux10noarchjws7-tomcat-docs-webapp11.0.21-5.redhat_00004.1.el10jwsjws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el10jws.noarch.rpm
Red Hat Enterprise Linux8noarchjws7-tomcat-el-5.0-api11.0.21-5.redhat_00004.1.el8jwsjws7-tomcat-el-5.0-api-11.0.21-5.redhat_00004.1.el8jws.noarch.rpm
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31 Jul 2026 08:32Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.16.5
EPSS0.01531
SSVC
CWE-551
Apache Tomcatdefault servletaccess controlmethod restrictionssecurity bypassunauthorized access
10