CVE-2023-28440

    Dashboard / Vulnerabilities / CVE-2023-28440

    CVE-2023-28440

    Published: 18 Apr 2023Last Modified: 29 Sept 2026

    Summary: Denial of service via admin theme import route in Discourse

    Details: Discourse is an open source platform for community discussion. In affected versions a maliciously crafted request from a Discourse administrator can lead to a long-running request and eventual timeout. This has the greatest potential impact in shared hosting environments where admins are untrusted. This issue has been addressed in versions 3.0.3 and 3.1.0.beta4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28440.json, https://github.com/discourse/discourse/security/advisories/GHSA-vm65-pv5h-6g3w, https://nvd.nist.gov/vuln/detail/CVE-2023-28440

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e54f52a756c032d7f35c0907b03a7dc9f2ea65e5
    Fixed -None

    Affected versions

    beta: <= 3.1.0.beta3

    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
    CVE-2023-28440 | CVE-DB