Generated remediation guidance and an executive summary. No account required.
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.
Use CWE-212, Varnish-Cache vendor hub and Varnish Cache product page to widen CVE-2019-20637 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2020-11653 and CVE-2021-36740 for nearby disclosures in the same product family.