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    CVE-2021-3988

    A Cross-site Scripting (XSS) vulnerability exists in janeczku/calibre-web, specifically in the file `edit_books.js`. The vulnerability occurs when editing book properties, such as uploading a cover or a format. The affected code directly inserts user input into the DOM without proper sanitization, allowing attackers to execute arbitrary JavaScript code. This can lead to various attacks, including stealing cookies. The issue is present in the code handling the `#btn-upload-cover` change event.

    Published:Nov 15, 2024
    Last Modified:Nov 20, 2024
    EPS:Nov 15, 2024
    EPSS Score:0.00099
    CVSS Score:6.1

    Affected Products

    Vendor
    Janeczku
    Product
    Calibre-web

    Exploits

    https://huntr.com/bounties/fa4c8fd1-7846-4dad-9112-2c07461f0609

    Related CVEs

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    CVE-2025-65858 (CVSS 3.5) — A Stored Cross-Site Scripting (XSS) vulnerability in Calibre-Web v0.6.25 allows attackers to inject malicious …
    CVE-2025-7404 (CVSS 5.9) — Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Ca…
    CVE-2025-6998 (CVSS 8.7) — ReDoS in strip_whitespaces() function in cps/string_helper.py in Calibre Web and Autocaliweb allows unauthenti…
    CVE-2021-3987 (CVSS 4.3) — An improper access control vulnerability exists in janeczku/calibre-web. The affected version allows users wit…
    CVE-2021-3986 (CVSS 4.3) — A vulnerability in janeczku/calibre-web allows unauthorized users to view the names of private shelves belongi…
    CVE-2024-39123 (CVSS 5.4) — In janeczku Calibre-Web 0.6.0 to 0.6.21, the edit_book_comments function is vulnerable to Cross Site Scripting…
    CVE-2023-2106 (CVSS 9.8) — Weak Password Requirements in GitHub repository janeczku/calibre-web prior to 0.6.20.…
    CVE-2022-2525 (CVSS 9.8) — Improper Restriction of Excessive Authentication Attempts in GitHub repository janeczku/calibre-web prior to 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