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Case File

CVE-2019-0199

HIGH · CVSS 7.5 EPSS 72.86%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-04-10 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

CVE
CVE-2019-0199
Severity
HIGH
CVSS
7.5
EPSS
72.86%
Apache

Original Filing — NVD Description

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.