# RHSA-2026:93618: Security update for 3 packages

RHSA-2026:93618, released September 23, 2026, fixes 11 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-93618
- Platform: Linux
- Released: Sep 23, 2026
- Priority: Urgent (Closes CVE-2026-76183, rated Critical)
- CVEs: 11, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:93618

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [jws7-mod_cluster](https://patchblox.com/security/data/product/linux/jws7-mod-cluster.md) | RHEL 10 | 2.1.1-1.Final_redhat_00001.1.el10jws |
| [jws7-tomcat](https://patchblox.com/security/data/product/linux/jws7-tomcat.md) | RHEL 10 | 11.0.21-10.redhat_00010.1.el10jws |
| [jws7-tomcat-native](https://patchblox.com/security/data/product/linux/jws7-tomcat-native.md) | RHEL 10 | 1.3.7-4.redhat_4.el10jws |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-76183](https://patchblox.com/security/data/cve/CVE-2026-76183.md) | Urgent | tomcat9: Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSo... | 9.8 | 0.0057 |  |
| [CVE-2026-86248](https://patchblox.com/security/data/cve/CVE-2026-86248.md) | Urgent | tomcat9: CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in A... | 9.8 | 0.0050 |  |
| [CVE-2026-86350](https://patchblox.com/security/data/cve/CVE-2026-86350.md) | Urgent | tomcat9: Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat cau... | 9.1 | 0.0048 |  |
| [CVE-2026-86246](https://patchblox.com/security/data/cve/CVE-2026-86246.md) | Urgent | tomcat-native: Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options... | 9.1 | 0.0035 |  |
| [CVE-2026-77791](https://patchblox.com/security/data/cve/CVE-2026-77791.md) | High | tomcat9: Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a... | 7.5 | 0.0068 |  |
| [CVE-2026-86243](https://patchblox.com/security/data/cve/CVE-2026-86243.md) | High | tomcat-native: Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a... | 7.5 | 0.0056 |  |
| [CVE-2026-78383](https://patchblox.com/security/data/cve/CVE-2026-78383.md) | High | tomcat9: Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP req... | 7.5 | 0.0050 |  |
| [CVE-2026-79677](https://patchblox.com/security/data/cve/CVE-2026-79677.md) | High | tomcat9: Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat a... | 7.5 | 0.0042 |  |
| [CVE-2026-86247](https://patchblox.com/security/data/cve/CVE-2026-86247.md) | High | tomcat-native: Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirem... | 7.4 | 0.0020 |  |
| [CVE-2026-76166](https://patchblox.com/security/data/cve/CVE-2026-76166.md) | Routine | jws7-mod_cluster: A flaw was found in mod_cluster's AdvertiseListenerImpl (org.jboss.modcluster core module) | 4.3 | 0.0272 |  |
| [CVE-2026-73581](https://patchblox.com/security/data/cve/CVE-2026-73581.md) | Routine | tomcat10: Improper Check for Certificate Revocation vulnerability in Apache Tomcat | 6.5 | 0.0016 |  |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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