CVE-2023-41894

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    CVE-2023-41894

    Published: 19 Oct 2023Last Modified: 12 Aug 2026

    Summary: Local-only webhooks externally accessible via SniTun in Home Assistant Core

    Details: Home assistant is an open source home automation. The assessment verified that webhooks available in the webhook component are triggerable via the `*.ui.nabu.casa` URL without authentication, even when the webhook is marked as Only accessible from the local network. This issue is facilitated by the SniTun proxy, which sets the source address to 127.0.0.1 on all requests sent to the public URL and forwarded to the local Home Assistant. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/41xxx/CVE-2023-41894.json, https://github.com/home-assistant/core/security/advisories/GHSA-wx3j-3v2j-rf45, https://nvd.nist.gov/vuln/detail/CVE-2023-41894, https://www.home-assistant.io/blog/2023/10/19/security-audits-of-home-assistant/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f70469d6efad265beeae1b2da4f29e73263fe4a7

    Affected versions

    2023.8.4
    2023.8.3
    2023.8.2
    2023.8.1
    2023.8.0

    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-2023-41894 | CVE-DB