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Case File

CVE-2020-13943

MEDIUM · CVSS 4.3 EPSS 57.29%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-10-12 · Last synced 2026-08-04

CyberRota Analysis

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CVE
CVE-2020-13943
Severity
MEDIUM
CVSS
4.3
EPSS
57.29%
Apache

Original NVD Description

If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.