Apache Tomcat up to 8.5.100/9.0.112/10.1.49/11.0.14 HEAD Request access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Apache Tomcat up to 8.5.100/9.0.112/10.1.49/11.0.14. This affects an unknown function of the component HEAD Request Handler. Executing a manipulation can lead to access control. This vulnerability only affects products that are no longer supported by the maintainer. The identification of this vulnerability is CVE-2026-24733. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache Tomcat up to 8.5.100/9.0.112/10.1.49/11.0.14. It has been declared as critical. This vulnerability affects an unknown functionality of the component HEAD Request Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at lists.apache.org. This vulnerability was named CVE-2026-24733 since 01/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/23/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 299445 (Linux Distros Unpatched Vulnerability : CVE-2026-24733), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.0.113, 10.1.50 or 11.0.15 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (299445) and CERT Bund (WID-SEC-2026-0443). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Amazon Linux 2
  • IBM Power Hardware Management Console
  • Red Hat Enterprise Linux
  • SUSE Linux
  • SUSE openSUSE
  • Apache Tomcat
  • Open Source Camunda
  • Dell Secure Connect Gateway

Productinfo

Type

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Name

Version

License

Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔒

ADP CISA Base Score: 6.5
ADP CISA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299445
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-24733

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Tomcat 9.0.113/10.1.50/11.0.15

Timelineinfo

01/26/2026 CVE reserved
02/17/2026 +22 days Advisory disclosed
02/17/2026 +0 days VulDB entry created
04/23/2026 +65 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: lists.apache.org
Status: Confirmed

CVE: CVE-2026-24733 (🔒)
GCVE (CVE): GCVE-0-2026-24733
GCVE (VulDB): GCVE-100-346354
CERT Bund: WID-SEC-2026-0443 - Apache Tomcat und Tomcat Native: Mehrere Schwachstellen

Entryinfo

Created: 02/17/2026 21:03
Updated: 04/23/2026 13:17
Changes: 02/17/2026 21:03 (57), 02/18/2026 17:19 (7), 02/20/2026 01:46 (2), 03/11/2026 18:28 (21), 04/23/2026 13:17 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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