CVE & CISA-KEV Catalog

CVE-2026-24733

LOW

3.7

CVSS v3

Description

Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0.M1 through 9.0.112. Older, EOL versions are also affected. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fixes the issue.

CWE-20Improper Input Validation

How to fix

Remediation Available

tomcat10Debian

Fixed in:10.1.52-1~deb12u1CVE-2026-24733

Fixed in:10.1.52-1~deb13u1CVE-2026-24733

Fixed in:10.1.52-1CVE-2026-24733

jws6-tomcatRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcatRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-admin-webappsRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-admin-webappsRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-docs-webappRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-docs-webappRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-el-5.0-apiRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-el-5.0-apiRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-javadocRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-javadocRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-jsp-3.1-apiRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-jsp-3.1-apiRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-libRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-libRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-selinuxRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-selinuxRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-servlet-6.0-apiRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-servlet-6.0-apiRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-webappsRocky

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

jws6-tomcat-webappsRed Hat / RHEL

Fixed in:0:10.1.49-10.redhat_00008.1.el10jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el8jwsRHSA-2026:12194

Fixed in:0:10.1.49-10.redhat_00008.1.el9jwsRHSA-2026:12194

tomcat10Rocky

Fixed in:main@srcRHSA-2026:8334

Fixed in:main@noarchRHSA-2026:8334

tomcat10Red Hat / RHEL

Fixed in:main@noarchRHSA-2026:8334

Fixed in:main@srcRHSA-2026:8334

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.49%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Vendor Advisory1

lists.apache.org

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-11.