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HistoryFeb 28, 2020 - 1:10 a.m.

Potential HTTP request smuggling in Apache Tomcat

2020-02-2801:10:58
Google
osv.dev
45

0.003 Low

EPSS

Percentile

71.6%

The refactoring present in Apache Tomcat versions 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.