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Case File

CVE-2019-20637

HIGH · CVSS 7.5 EPSS 1.75%

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

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2019-20637
Severity
HIGH
CVSS
7.5
EPSS
1.75%

Original NVD Description

An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers.

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