GHSA-gg8r-xjwq-4w92

    Dashboard / Vulnerabilities / GHSA-gg8r-xjwq-4w92

    GHSA-gg8r-xjwq-4w92

    Published: 8 Dec 2022Last Modified: 8 Nov 2023

    Summary: Cross-site scripting vulnerability in TinyMCE alerts

    Details: ### Impact A cross-site scripting (XSS) vulnerability was discovered in the alert and confirm dialogs when these dialogs were provided with malicious HTML content. This can occur in plugins that use the alert or confirm dialogs, such as in the `image` plugin, which presents these dialogs when certain errors occur. The vulnerability allowed arbitrary JavaScript execution when an alert presented in the TinyMCE UI for the current user. ### Patches This vulnerability has been patched in TinyMCE 5.10.7 and TinyMCE 6.3.1 by ensuring HTML sanitization was still performed after unwrapping invalid elements. ### Fix To avoid this vulnerability: - Upgrade to TinyMCE 5.10.7 or higher for TinyMCE 5.x. - Upgrade to TinyMCE 6.3.1 or higher for TinyMCE 6.x. ### Workaround To reduce the impact of this vulnerability: - Ensure the the `images_upload_handler` returns a valid value as per the images_upload_handler documentation. ### References - https://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes - https://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes ### For more information If you have any questions or comments about this advisory: * Email us at [[email protected]](mailto:[email protected]) * Open an issue in the [TinyMCE repo](https://github.com/tinymce/tinymce/issues)

    References: https://github.com/tinymce/tinymce/security/advisories/GHSA-gg8r-xjwq-4w92, https://nvd.nist.gov/vuln/detail/CVE-2022-23494, https://github.com/tinymce/tinymce/commit/6923d85eba6de3e08ebc9c5a387b5abdaa21150e, https://github.com/tinymce/tinymce/commit/8bb2d2646d4e1a718fce61a775fa22e9d317b32d, https://github.com/tinymce/tinymce, https://www.tiny.cloud/docs/release-notes/release-notes5107/#securityfixes, https://www.tiny.cloud/docs/tinymce/6/6.3-release-notes/#security-fixes, https://www.tiny.cloud/docs/tinymce/6/file-image-upload/#images_upload_handler

    Affected packages

    Package

    Name: tinymce

    Purl: pkg:npm/tinymce

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 6.0.0
    Fixed -6.3.1

    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
    GHSA-gg8r-xjwq-4w92 | CVE-DB