The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M21 and 8.5.0 to 8.5.15 bypassed a number of security checks that prevented directory traversal attacks. It was therefore possible to bypass security constraints using a specially crafted URL.
Severity
High 7.5
Published
11 Aug 2017
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD
Affected software
Software
Affected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat