Description
If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0-M1 to 9.0.67, 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only), Tomcat did not reject a request containing an invalid Content-Length header making a request smuggling attack possible if Tomcat was located behind a reverse proxy that also failed to reject the request with the invalid header.
Scores
CVSS v3
7.5
EPSS
0.0019
EPSS Percentile
40.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-444
Status
published
Products (3)
apache/tomcat
8.5.0 - 8.5.83
org.apache.tomcat/tomcat-coyote
9.0.0-M1 - 9.0.68Maven
org.apache.tomcat.embed/tomcat-embed-core
8.5.0 - 8.5.83Maven
Published
Nov 01, 2022
Tracked Since
Feb 18, 2026