AUGUST 4, 2026
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Case File

CVE-2022-42252

HIGH · CVSS 7.5 EPSS 1.45%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-11-01 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2022-42252
Severity
HIGH
CVSS
7.5
EPSS
1.45%
Apache

Original NVD 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.