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    CVE-2026-70657

    Copyparty is a portable file server. Prior to 1.20.17, copyparty volumes with the dk or dks directory-key flag combined with the fk or fka file-key flag can convert a valid file key into a directory key, granting read access to the containing folder. This vulnerability was only reachable if both types of keys (filekeys and dirkeys) were manually enabled in the volume flags simultaneously. This issue is fixed in version 1.20.17.

    Published:Aug 18, 2026
    Last Modified:Aug 19, 2026
    EPS:Aug 18, 2026
    EPSS Score:0.00317
    CVSS Score:4.3

    Affected Products

    Vendor
    9001
    Product
    Copyparty

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2025-58753 (CVSS 5.3) — Copyparty is a portable file server. In versions prior to 1.19.8, there was a missing permission-check in the …
    CVE-2023-41471 (CVSS 7.8) — Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to execute arbitrary code…
    CVE-2025-54796 (CVSS 7.5) — Copyparty is a portable file server. Versions prior to 1.18.9, the filter parameter for the "Recent Uploads" p…
    CVE-2025-54589 (CVSS 6.3) — Copyparty is a portable file server. In versions 1.18.6 and below, when accessing the recent uploads page at `…
    CVE-2025-54423 (CVSS 5.4) — copyparty is a portable file server. In versions up to and including versions 1.18.4, an unauthenticated attac…
    CVE-2025-27145 (CVSS 3.6) — copyparty, a portable file server, has a DOM-based cross-site scripting vulnerability in versions prior to 1.1…

    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