# RHSA-2026:67163: tomcat9 security update

RHSA-2026:67163, released May 27, 2026, fixes 28 CVEs in tomcat9 (version 9.0.120-1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-67163
- Platform: Linux
- Released: May 27, 2026
- Priority: Urgent (Closes CVE-2026-59084, rated Critical)
- CVEs: 28, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:67163

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [tomcat9](https://patchblox.com/security/data/product/linux/tomcat9.md) | RHEL 10 | 9.0.120-1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-59084](https://patchblox.com/security/data/cve/CVE-2026-59084.md) | Urgent | tomcat11: Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the... | 9.1 | 0.0051 |  |
| [CVE-2025-55754](https://patchblox.com/security/data/cve/CVE-2025-55754.md) | High | jws6-tomcat: Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. Tomcat did not escape A... | 9.6 | 0.1034 |  |
| [CVE-2025-46701](https://patchblox.com/security/data/cve/CVE-2025-46701.md) | High | libtomcat10-embed-java: Improper Handling of Case Sensitivity vulnerability in Apache Tomcat's GCIservlet allows security constraint bypass o... | 7.3 | 0.0314 |  |
| [CVE-2026-55957](https://patchblox.com/security/data/cve/CVE-2026-55957.md) | High | tomcat: Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authentic... | 7.3 | 0.0286 |  |
| [CVE-2026-41293](https://patchblox.com/security/data/cve/CVE-2026-41293.md) | High | jws6-tomcat: Improper Input Validation vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11... | 9.8 | 0.0171 |  |
| [CVE-2026-43512](https://patchblox.com/security/data/cve/CVE-2026-43512.md) | High | jws6-tomcat: DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects... | 9.8 | 0.0133 |  |
| [CVE-2025-61795](https://patchblox.com/security/data/cve/CVE-2025-61795.md) | High | jws6-tomcat: Improper Resource Shutdown or Release vulnerability in Apache Tomcat. If an error occurred (including exceeding limit... | 7.5 | 0.0125 |  |
| [CVE-2026-43515](https://patchblox.com/security/data/cve/CVE-2026-43515.md) | High | jws6-tomcat: Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension in... | 9.1 | 0.0122 |  |
| [CVE-2026-41284](https://patchblox.com/security/data/cve/CVE-2026-41284.md) | High | jws6-tomcat: Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat... | 7.5 | 0.0084 |  |
| [CVE-2026-29145](https://patchblox.com/security/data/cve/CVE-2026-29145.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 9.1 | 0.0073 |  |
| [CVE-2026-24880](https://patchblox.com/security/data/cve/CVE-2026-24880.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 7.5 | 0.0071 |  |
| [CVE-2026-53404](https://patchblox.com/security/data/cve/CVE-2026-53404.md) | High | jws6-tomcat: Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first c... | 7.3 | 0.0070 |  |
| [CVE-2026-42498](https://patchblox.com/security/data/cve/CVE-2026-42498.md) | High | jws6-tomcat: Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache To... | 7.3 | 0.0069 |  |
| [CVE-2026-55276](https://patchblox.com/security/data/cve/CVE-2026-55276.md) | High | jws7-tomcat: Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty author... | 9.1 | 0.0061 |  |
| [CVE-2026-53434](https://patchblox.com/security/data/cve/CVE-2026-53434.md) | High | jws7-tomcat: Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based conn... | 9.1 | 0.0059 |  |
| [CVE-2026-25854](https://patchblox.com/security/data/cve/CVE-2026-25854.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 7.4 | 0.0058 |  |
| [CVE-2026-24733](https://patchblox.com/security/data/cve/CVE-2026-24733.md) | High | tomcat9: Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method | 7.4 | 0.0055 |  |
| [CVE-2026-59083](https://patchblox.com/security/data/cve/CVE-2026-59083.md) | High | jws7-tomcat: Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security cons... | 9.1 | 0.0052 |  |
| [CVE-2026-43513](https://patchblox.com/security/data/cve/CVE-2026-43513.md) | High | jws6-tomcat: Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomca... | 7.5 | 0.0050 |  |
| [CVE-2026-34483](https://patchblox.com/security/data/cve/CVE-2026-34483.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 7.5 | 0.0047 |  |
| [CVE-2026-34487](https://patchblox.com/security/data/cve/CVE-2026-34487.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 7.5 | 0.0046 |  |
| [CVE-2026-32990](https://patchblox.com/security/data/cve/CVE-2026-32990.md) | High | tomcat: Improper Input Validation vulnerability in Apache Tomcat due to an incomplete fix of CVE-2025-66614. This issue affec... | 7.3 | 0.0031 |  |
| [CVE-2025-66614](https://patchblox.com/security/data/cve/CVE-2025-66614.md) | High | tomcat: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.  Security Fix(es):... | 9.1 | 0.0027 |  |
| [CVE-2026-50229](https://patchblox.com/security/data/cve/CVE-2026-50229.md) | Routine | tomcat11: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess examp... | 6.1 | 0.0409 |  |
| [CVE-2025-55668](https://patchblox.com/security/data/cve/CVE-2025-55668.md) | Routine | jws6-tomcat: Session Fixation vulnerability in Apache Tomcat via rewrite valve. This issue affects Apache Tomcat: from 11.0.0-M1 t... | 6.5 | 0.0095 |  |
| [CVE-2026-55956](https://patchblox.com/security/data/cve/CVE-2026-55956.md) | Routine | jws6-tomcat: Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet... | 6.5 | 0.0070 |  |
| [CVE-2026-55955](https://patchblox.com/security/data/cve/CVE-2026-55955.md) | Routine | tomcat11: Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in t... | 6.5 | 0.0044 |  |
| [CVE-2026-43514](https://patchblox.com/security/data/cve/CVE-2026-43514.md) | Routine | jws6-tomcat: Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tom... | 3.7 | 0.0035 |  |

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