{"id":"BIT-discourse-2021-43794","summary":"Anonymous user cache poisoning via development-mode header in Discourse","details":"Discourse is an open source discussion platform. In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page. This can lead to a partial denial-of-service. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.","aliases":["CVE-2021-43794","GHSA-249g-pc77-65hp"],"modified":"2026-09-08T08:46:01.140871152Z","published":"2024-03-06T11:08:42.616Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43794"}],"affected":[{"package":{"name":"discourse","ecosystem":"Bitnami","purl":"pkg:bitnami/discourse"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.7.11"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/discourse/BIT-discourse-2021-43794.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}],"schema_version":"1.9.0"}