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Fixed in Apache Tomcat 9.0.121

🗓️ 28 Jul 2026 14:29:05Reported by Apache TomcatType 
tomcat
 tomcat
🔗 tomcat.apache.org👁 12 Views

Tomcat 9.0.121 fixes DoS in WebSocket chat example caused by unbounded buffer from slow clients.

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28 Jul 2026 14:29Current
6Medium risk
Vulners AI Score6
CVSS 3.17.5
EPSS0.00451
SSVC
12