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    CVE-2021-42080

    An attacker is able to launch a Reflected XSS attack using a crafted URL. POC: Visit the following URL https://<IPADDRESS>:8153/qstorapi/echo?inputMessage=<img%20src=x%20onerror=alert(document.cookie)>

    Published:Jul 10, 2023
    Last Modified:Sep 22, 2025
    EPS:Jul 10, 2023
    EPSS Score:0.00108
    CVSS Score:7.4

    Affected Products

    Vendor
    Osnexus
    Product
    Quantastor

    Exploits

    No exploit reference

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    CVE-2021-42081 (CVSS 9.1) — An authenticated administrator is allowed to remotely execute arbitrary shell commands via the API. POC http:…
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    CVE-2021-42082 (CVSS 7.8) — Local users are able to execute scripts under root privileges. POC On the local host run the following comma…
    CVE-2021-42083 (CVSS 8.7) — An authenticated attacker is able to create alerts that trigger a stored XSS attack. POC * go to the ale…
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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