CVE-2026-34486 – Apache Tomcat

CVSS 7.5 IMPORTANT

“Weaknesses in core web infrastructure quietly open the door to serious application compromise.”

Apache has released security updates for Tomcat addressing CVE-2026-34486 and CVE-2026-29146, both affecting core request handling and application processing behavior. These vulnerabilities could allow attackers to interfere with how web applications process input, potentially leading to unauthorized access or service disruption in exposed environments.

CVE-2026-34486 has a CVSS score of 7.5, which is High severity. CVE-2026-29146 has a CVSS score of 7.5, which is High severity. While no verified exploitation or public proof-of-concept code has been confirmed, both issues pose meaningful risk to production systems running unpatched versions of Tomcat.

Key Details

Affected Product
Apache Tomcat
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
CWE Classification
CWE-311
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