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    CVE-2021-3915

    bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type

    Published:Nov 13, 2021
    Last Modified:Nov 21, 2024
    EPS:Nov 13, 2021
    EPSS Score:0.00334
    CVSS Score:5.7

    Affected Products

    Vendor
    Bookstackapp
    Product
    Bookstack

    Exploits

    https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    Related CVEs

    CVE-2026-84695 (CVSS 9.3) — BookStack before 26.05.4 contains a stored cross-site scripting vulnerability in the drawing upload endpoint t…
    CVE-2026-82450 (CVSS 8.7) — BookStack before 26.05.4 contains a remote code execution vulnerability in the portable ZIP import functionali…
    CVE-2026-67204 (CVSS 5.3) — BookStack before 26.05.4 contains a broken access control vulnerability that allows authenticated API users wi…
    CVE-2026-5484 (CVSS 5.5) — A weakness has been identified in BookStackApp BookStack up to 26.03. Affected is the function chapterToMarkdo…
    CVE-2023-6199 (CVSS 6.5) — Book Stack version 23.10.2 allows filtering local files on the server. This is possible because the applicatio…
    CVE-2023-4624 (CVSS 2.4) — Server-Side Request Forgery (SSRF) in GitHub repository bookstackapp/bookstack prior to v23.08.…
    CVE-2022-40690 (CVSS 5.4) — Cross-site scripting vulnerability in BookStack versions prior to v22.09 allows a remote authenticated attacke…
    CVE-2022-0877 (CVSS 5.4) — Cross-site Scripting (XSS) - Stored in GitHub repository bookstackapp/bookstack prior to v22.02.3.…
    CVE-2021-4194 (CVSS 6.5) — bookstack is vulnerable to Improper Access Control…
    CVE-2021-4119 (CVSS 9.8) — bookstack is vulnerable to Improper Access Control…

    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