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    CVE-2021-34816

    An Argument Injection issue in the plugin management of Etherpad 1.8.13 allows privileged users to execute arbitrary code on the server by installing plugins from an attacker-controlled source.

    Published:Jul 21, 2021
    Last Modified:Nov 21, 2024
    EPS:Jul 21, 2021
    EPSS Score:0.00444
    CVSS Score:7.2

    Affected Products

    Vendor
    Etherpad
    Product
    Etherpad

    Exploits

    https://blog.sonarsource.com/etherpad-code-execution-vulnerabilitieshttps://blog.sonarsource.com/etherpad-code-execution-vulnerabilities

    Related CVEs

    CVE-2026-55086 (CVSS 4.2) — Etherpad is a real-time collaborative editor. Prior to 3.1.0, src/node/handler/ImportHandler.ts and src/node/h…
    CVE-2026-55085 (CVSS 9.6) — Etherpad is a real-time collaborative editor. Prior to 3.3.1, result.appendSpan in src/static/js/domline.ts in…
    CVE-2026-55089 (CVSS 9.9) — Etherpad is a real-time collaborative editor. From 2.1.0 until 3.1.0, Etherpad's src/node/handler/APIHandler.t…
    CVE-2026-55090 (CVSS 5.3) — Etherpad is a real-time collaborative editor. Prior to 3.3.0, getHTMLFromAtext in src/node/utils/ExportHtml.ts…
    CVE-2026-55088 (CVSS 6.8) — Etherpad is a real-time collaborative editor. From 2.6.0 until 3.1.0, Etherpad's src/node/hooks/express/tokenT…
    CVE-2026-55087 (CVSS 6.1) — Etherpad is a real-time collaborative editor. From 2.1.0 until 3.1.0, Etherpad uses the attacker-controlled x-…
    CVE-2021-43802 (CVSS 9.9) — Etherpad is a real-time collaborative editor. In versions prior to 1.8.16, an attacker can craft an `*.etherpa…
    CVE-2021-34817 (CVSS 6.1) — A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject …
    CVE-2020-22781 (CVSS 7.5) — In Etherpad < 1.8.3, a specially crafted URI would raise an unhandled exception in the cache mechanism and cau…
    CVE-2020-22782 (CVSS 7.5) — Etherpad < 1.8.3 is affected by a denial of service in the import functionality. Upload of binary file to the …

    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