An HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before 7.1.2, and 7.2.x before 7.2.1. An attacker may introduce characters through HTTP/2 pseudo-headers that are invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1 requests to the backend. This could, in turn, be used to exploit vulnerabilities in a server behind the Varnish server. Note: the 6.0.x LTS series (before 6.0.11) is affected.
{ "cpes": [ "cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*", "cpe:2.3:a:varnish_cache_project:varnish_cache:7.2.0:*:*:*:*:*:*:*" ], "severity": "High" }