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    CVE-2021-3312

    An XML external entity (XXE) vulnerability in Alkacon OpenCms 11.0, 11.0.1 and 11.0.2 allows remote authenticated users with edit privileges to exfiltrate files from the server's file system by uploading a crafted SVG document.

    Published:Oct 8, 2021
    Last Modified:Nov 21, 2024
    EPS:Oct 8, 2021
    EPSS Score:0.00476
    CVSS Score:6.5

    Affected Products

    Vendor
    Alkacon
    Product
    Opencms

    Exploits

    https://github.com/alkacon/opencms-core/issues/725https://github.com/alkacon/opencms-core/issues/725

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2023-42344 (CVSS 7.3) — Alkacon OpenCms before 10.5.1 allows remote unauthenticated attackers to obtain sensitive information via a cm…
    CVE-2023-42345 (CVSS 6.1) — A Cross Site Scripting vulnerability in Alkacon OpenCms before 16 exists via updateModelGroups.jsp.…
    CVE-2023-42343 (CVSS 6.1) — A Cross Site Scripting vulnerability in Alkacon OpenCms before 10.5.1 exists via cmis-online/type.…
    CVE-2023-42346 (CVSS 7.5) — Alkacon OpenCms before 16 allows XXE when the <!DOCTYPE> refers to an external host.…
    CVE-2026-38429 (CVSS 9.8) — OpenCMS v20 and before is vulnerable to XML External Entity (XXE) in the Admin Import DB feature due to insecu…
    CVE-2026-2736 (CVSS 5.1) — Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScrip…
    CVE-2026-2735 (CVSS 5.1) — Stored Cross-Site Scripting (XSS) in Alkacon's OpenCms v18.0, which occurs when user input is not properly val…
    CVE-2024-41446 (CVSS 5.4) — A stored cross-site scripting (XSS) vulnerability in Alkacon OpenCMS v17.0 allows attackers to execute arbitra…
    CVE-2024-42699 (CVSS 6.5) — Cross Site Scripting vulnerability in Create/Modify article function in Alkacon OpenCMS 17.0 allows remote att…
    CVE-2024-41447 (CVSS 5.4) — A stored cross-site scripting (XSS) vulnerability in Alkacon OpenCMS v17.0 allows attackers to execute arbitra…

    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