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    CVE-2021-39222

    Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, a user would need to right-click on a malicious file and open the file in a new tab. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. It is recommended that the Nextcloud Talk application is upgraded to patched versions 10.0.7, 10.1.4, 11.1.2, 11.2.0 or 12.0.0. As a workaround, use a browser that has support for Content-Security-Policy.

    Published:Nov 15, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 15, 2021
    EPSS Score:0.00425
    CVSS Score:6.4

    Affected Products

    Vendor
    Nextcloud
    Product
    Talk

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2023-22473 (CVSS 2.1) — Talk-Android enables users to have video & audio calls through Nextcloud on Android. Due to passcode bypass, a…
    CVE-2022-41926 (CVSS 3.3) — Nextcould talk android is the android OS implementation of the nextcloud talk chat system. In affected version…
    CVE-2022-39212 (CVSS 4.3) — Nextcloud Talk is an open source chat, video & audio calls client for the Nextcloud platform. In affected vers…
    CVE-2022-35932 (CVSS 3.5) — Nextcloud Talk is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.7, 13.0.7, and 14.0…
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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