CVE-2021-3163

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    CVE-2021-3163

    Published: 12 Apr 2021Last Modified: 10 Mar 2026

    Summary:

    Details: A vulnerability in the HTML editor of Slab Quill 4.8.0 allows an attacker to execute arbitrary JavaScript by storing an XSS payload (a crafted onloadstart attribute of an IMG element) in a text field. Note: Researchers have claimed that this issue is not within the product itself, but is intended behavior in a web browser

    References: https://quilljs.com, , https://github.com/quilljs/quill/issues/3273, https://github.com/quilljs/quill/issues/3364, https://burninatorsec.blogspot.com/2021/04/cve-2021-3163-xss-slab-quill-js.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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
    CVE-2021-3163 | CVE-DB