Cache poisoning via maliciously-formed request
Package
Discourse
(Ruby)
Affected versions
stable <= 2.8.6; beta <= 2.9.0.beta7; tests-passed <= 2.9.0.beta7
Patched versions
stable >= 2.8.7; beta >= 2.9.0.beta8; tests-passed >= 2.9.0.beta8
Impact
A maliciously crafted request for static assets could cause error responses to be cached by Discourse's default NGINX proxy configuration.
Patches
A corrected NGINX configuration is included in the latest stable, beta and tests-passed versions of Discourse.