CVE-2021-43794
MEDIUM5.3EPSS 0.38%Anonymous user cache poisoning via development-mode header in Discourse
Published: 3/6/2024Modified: 3/13/2026
Description
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.
Affected packages (1)
- Bitnami/discoursefrom 0, < 2.7.11
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |