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tomcat: security constraint bypass with HTTP/0.9

🗓️ 15 Apr 2026 17:31:38Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

Tomcat vulnerability allows bypass of security constraints via malformed HTTP/0.9 HEAD requests to access resources denied by GET.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ibm		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in tomcat-embed-core-9.0.110.jar
28 Apr 202622:39
–ibm
ibm		Security Bulletin: Vulnerability in Apache Tomcat affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
22 Jun 202613:47
–ibm
ibm		Security Bulletin: Vulnerabilities in Apache Tomcat and Lodash might affect IBM Storage Defender Copy Data Management
4 May 202616:20
–ibm
ibm		Security Bulletin: Due to the use of Apache Tomcat and mchange-commons-java, IBM ApplinX is vulnerable to Improper Input Validation vulnerablities (CVE-2025-66614, CVE-2026-24733, CVE-2026-24734) and an 'Injection' vulnerability (CVE-2026-27727).
8 Apr 202609:12
–ibm
ibm		Security Bulletin: Maximo AI Service uses multiple third party dependencies which is vulnerable to multiple CVEs.
27 Apr 202607:44
–ibm
ibm		Security Bulletin: IBM DevOps Build addresses multiple vulnerabilities.
25 Mar 202613:04
–ibm
ibm		Security Bulletin: Multiple vulnerabilities in IBM DevOps Release
31 Mar 202609:44
–ibm
ibm		Security Bulletin: Vulnerabilities in Apache Tomcat Server (CVE-2025-61795, CVE-2025-66614, CVE-2026-24733, CVE-2026-24734) affect Power HMC.
31 Mar 202615:28
–ibm
attackerkb		CVE-2026-24733
17 Feb 202618:50
–attackerkb
nessus		Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2026-1496)
30 Mar 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Images20251124noarchtomcat1010.1.54-1.hum1tomcat10-10.1.54-1.hum1.noarch.rpm

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15 Jul 2026 13:15Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.13.7 - 6.5
EPSS0.00494
SSVC
CWE-20
TomcatSecurity constraints bypassMalformed head requestGet denial bypass
2