CVE-2021-25122

CVE-2021-25122: Apache Tomcat h2c request mix-up

Vendor Apache Software Foundation
Product Apache Tomcat
Weakness CWE-200 · Info exposure
Published March 1, 2021
Last update February 13, 2025

CVSS base score

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 1, 2021 CVE published
February 13, 2025 Record updated