---
id: CVE-2026-93446
title: 'Apache Tomcat: Possible TLS 1.3 connection failures'
summary: >-
  Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3
  connections to fail intermittently.




  This issue affects Apache Tomcat: from 11.0.0-M21 through 11.0.26, from
  10.1.25 through 10.1.60, from 9.0.90 through 9.0.122.



  …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: adp
cwe:
  - CWE-459
vendor: Apache Software Foundation
product: Apache Tomcat
affected:
  - apache_tomcat >= 11.0.0-M21 <= 11.0.26
  - apache_tomcat >= 10.1.25 <= 10.1.60
  - apache_tomcat >= 9.0.90 <= 9.0.122
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-29T17:56:57.205909Z'
published: '2026-10-20'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T17:57:06.247Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-93446'
references:
  - url: 'https://lists.apache.org/thread.html/zh87okr5qspv4byzfpy2w6dqrokrnxzw'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93446.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93446'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2556181'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93446'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93446'
  - url: 'https://access.redhat.com/errata/RHSA-2026:85926'
  - url: 'https://access.redhat.com/errata/RHSA-2026:81365'
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00592
epssPercentile: 0.48317
patched:
  - hardened_images
ingestedAt: '2026-10-20T14:08:00.569Z'
---

## Overview

Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently.



This issue affects Apache Tomcat: from 11.0.0-M21 through 11.0.26, from 10.1.25 through 10.1.60, from 9.0.90 through 9.0.122.



Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

## Affected

- `apache_tomcat >= 11.0.0-M21 <= 11.0.26`
- `apache_tomcat >= 10.1.25 <= 10.1.60`
- `apache_tomcat >= 9.0.90 <= 9.0.122`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:85926** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:85926)
- **RHSA-2026:81365** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:81365)