CVE-2021-43794

Medium

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.

SeverityMedium
CVSS5.3
Exploit probability—
ProductDiscourse
PublishedDec 1, 2021
First seenDec 1, 2021
Weakness typeCWE-610CWE-610

How to fix

Update
  • discourse discourse2.7.11 or later

Affected products

ProductAffected versionsFixed in
discourse discoursev < 2.7.112.7.11

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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