CVE-2026-55276
Received
Received - Intake
Incorrect Authorization in Apache Tomcat Due to Missing Roles and Constraints
Vulnerability report for CVE-2026-55276, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-29
Last updated on: 2026-06-29
Assigner: Apache Software Foundation
Description
Description
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119 which fixes the issue.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| apache | tomcat | From 11.0.0-M1 (inc) to 11.0.22 (inc) |
| apache | tomcat | From 10.1.0-M1 (inc) to 10.1.55 (inc) |
| apache | tomcat | From 9.0.0.M1 (inc) to 9.0.118 (inc) |
| apache | tomcat | From 8.5.0 (inc) to 8.5.100 (inc) |
| apache | tomcat | 11.0.23 |
| apache | tomcat | 10.1.56 |
| apache | tomcat | 9.0.119 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-670 | The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated. |
