Vulnerability DatabaseCVE-2026-93446
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CVE-2026-93446
Published:October 20, 2026
Updated:October 21, 2026
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 Packages
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=10.1.25 <10.1.61
Fix Suggestion:
Update to version 10.1.61
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=9.0.90 <9.0.123
Fix Suggestion:
Update to version 9.0.123
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=11.0.0-M21 <11.0.27
Fix Suggestion:
Update to version 11.0.27
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=10.1.25 <10.1.61
Fix Suggestion:
Update to version 10.1.61
org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=9.0.90 <9.0.123
Fix Suggestion:
Update to version 9.0.123
org.apache.tomcat.experimental:tomcat-embed-programmatic (JAVA):
Affected version(s) >=10.1.25 <10.1.61
Fix Suggestion:
Update to version 10.1.61
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=11.0.0-M21 <11.0.27
Fix Suggestion:
Update to version 11.0.27
org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=11.0.0-M21 <11.0.27
Fix Suggestion:
Update to version 11.0.27
org.apache.tomcat.experimental:tomcat-embed-programmatic (JAVA):
Affected version(s) >=11.0.0-M21 <11.0.27
Fix Suggestion:
Update to version 11.0.27
org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.90 <9.0.123
Fix Suggestion:
Update to version 9.0.123
org.apache.tomcat.experimental:tomcat-embed-programmatic (JAVA):
Affected version(s) >=9.0.90 <9.0.123
Fix Suggestion:
Update to version 9.0.123
org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=10.1.25 <10.1.61
Fix Suggestion:
Update to version 10.1.61
Related Resources (3)
https://nvd.nist.gov/vuln/detail/CVE-2026-93446
http://www.openwall.com/lists/oss-security/2026/10/20/25
https://lists.apache.org/thread.html/zh87okr5qspv4byzfpy2w6dqrokrnxzw
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Incomplete Cleanup
CWE-459