DRUPAL-CONTRIB-2026-286

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    DRUPAL-CONTRIB-2026-286

    Published: 28 Oct 2026Last Modified: 28 Oct 2026

    Summary:

    Details: Stage File Proxy is a general solution for getting production files on a development server on demand. **It is not intended for usage on production sites.** The module doesn't sufficiently check file URL for malicious content when attempting to do fallback retrieval leading to a cross-site scripting vulnerability. This vulnerability is mitigated by the fact this development module must be enabled on an attacker's target site, and the attacker must be able to upload a malicious file to the "origin" server configured for the module.

    References: https://www.drupal.org/sa-contrib-2026-286

    Affected packages

    Package

    Name: drupal/stage_file_proxy

    Purl: pkg:composer/drupal/stage_file_proxy?repository_url=https:%2F%2Fpackages.drupal.org%2F8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.7

    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
    DRUPAL-CONTRIB-2026-286 | CVE-DB