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Date: Mon, 1 Mar 2021 11:13:18 +0000
From: Mark Thomas <>
Subject: CVE-2021-25122: Apache Tomcat h2c request mix-up

When responding to new h2c connection requests, Apache Tomcat versions 
10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could 
duplicate request headers and a limited amount of request body from one 
request to another meaning user A and user B could both see the results 
of user A's request.


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