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    CVE-2021-26271

    It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).

    Published:Jan 26, 2021
    Last Modified:Aug 25, 2026
    EPS:Jan 26, 2021
    EPSS Score:0.01979
    CVSS Score:6.5

    Affected Products

    Vendor
    Ckeditor
    Product
    Ckeditor
    Vendor
    Oracle
    Product
    Agile Product Lifecycle Management
    Vendor
    Oracle
    Product
    Application Express
    Vendor
    Oracle
    Product
    Financial Services Analytical Applications Infrastructure
    Vendor
    Oracle
    Product
    Jd Edwards Enterpriseone Tools
    Vendor
    Oracle
    Product
    Siebel Ui Framework
    Vendor
    Oracle
    Product
    Webcenter Sites

    Exploits

    No exploit reference

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    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