CVE-2026-80353
Published:October 20, 2026
Updated:November 02, 2026
Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector.
This issue affects Apache Tomcat: from 9.0.47 through 9.0.122.
Users are recommended to upgrade to version 9.0.123, which fixes the issue.
Affected Packages
https://github.com/apache/tomcat.git (GITHUB):
Affected version(s) >=9.0.47 <9.0.123Fix Suggestion:
Update to version 9.0.123org.apache.tomcat.embed:tomcat-embed-core (JAVA):
Affected version(s) >=9.0.48 <9.0.123Fix Suggestion:
Update to version 9.0.123org.apache.tomcat:tomcat-coyote (JAVA):
Affected version(s) >=9.0.48 <9.0.123Fix Suggestion:
Update to version 9.0.123Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Time-of-check Time-of-use (TOCTOU) Race Condition
EPSS
Base Score:
0.39