CVE-2023-46130

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    CVE-2023-46130

    Published: 10 Nov 2023Last Modified: 6 Oct 2026

    Summary: Bypassing height value allowed in some theme components

    Details: Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, some theme components allow users to add svgs with unlimited `height` attributes, and this can affect the availability of subsequent replies in a topic. Most Discourse instances are unaffected, only instances with the svgbob or the mermaid theme component are within scope. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. As a workaround, disable or remove the relevant theme components.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46130.json, https://github.com/discourse/discourse/security/advisories/GHSA-c876-638r-vfcg, https://nvd.nist.gov/vuln/detail/CVE-2023-46130, https://github.com/discourse/discourse/commit/6183d9633de873ac2b1e9cdb6ac1c94b4ffae9cb, https://github.com/discourse/discourse/commit/89a2e60706ce22e4afc463d03af2f34c53291800

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4f64a829e552993a9e6fcc7f77b826f56683551d

    Affected versions

    3.2.0-beta1
    3.2.0-beta2

    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-2023-46130 | CVE-DB