A security issue has been reported with a Varnish cache server, resulting in an “Access Denied” error. The problem occurred after a cache key was incorrectly generated, leading to the server’s denial of access.
Specifically, the error was triggered by a mismatch between a cached response and the actual request made by a client. The Varnish cache server, which is used to improve website performance by caching frequently accessed content, returned an error message when it could not verify the authenticity of the request.
The error details provided reveal that the issue was related to a specific cache key, “cache-iad-kjyo7100119-IAD 1740055168 906754509”. This suggests that the problem may have been caused by a misconfiguration or incorrect data in the cache server’s storage.
Source: https://www.mlb.com/news/vladimir-guerrero-jr-free-agency-discussion