CVE-2023-43659

    Dashboard / Vulnerabilities / CVE-2023-43659

    CVE-2023-43659

    Published: 16 Oct 2023Last Modified: 28 Oct 2026

    Summary: Cross-site Scripting via email preview when CSP disabled in Discourse

    Details: Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

    References: https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43659.json, https://github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8ph, https://nvd.nist.gov/vuln/detail/CVE-2023-43659

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 61b51f9eb6e539825496ec00d58ce3ff53fdb578
    Fixed -None

    Affected versions

    3.2.0-beta1

    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-2023-43659 | CVE-DB