BIT-discourse-2021-43794

    Dashboard / Vulnerabilities / BIT-discourse-2021-43794

    BIT-discourse-2021-43794

    Published: 6 Mar 2024Last Modified: 8 Sept 2026

    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.

    References: https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1, https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp, https://nvd.nist.gov/vuln/detail/CVE-2021-43794

    Affected packages

    Package

    Name: discourse

    Purl: pkg:bitnami/discourse

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -2.7.11

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-discourse-2021-43794 | CVE-DB