CVE-2021-3988— Cross-site Scripting (XSS) in janeczku/calibre-web
Quick assessment
Affected
janeczku janeczku/calibre-web
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Calibre-Web是Jan B个人开发者的一款用于浏览、阅读和下载Calibre数据库中电子书的Web应用程序。 Calibre-Web存在跨站脚本漏洞，该漏洞源于直接将用户输入插入DOM，而没有经过适当的清理。攻击者利用该漏洞可以执行任意 JavaScript 代码。
Possible ATT&CK Techniques 1 AI
T1059.007 · JavaScript
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I. Basic Information for CVE-2021-3988
Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) in janeczku/calibre-web
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Calibre-Web 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Calibre-Web是Jan B个人开发者的一款用于浏览、阅读和下载Calibre数据库中电子书的Web应用程序。 Calibre-Web存在跨站脚本漏洞，该漏洞源于直接将用户输入插入DOM，而没有经过适当的清理。攻击者利用该漏洞可以执行任意 JavaScript 代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| janeczku | janeczku/calibre-web | unspecified ~ latest | - |
|
II. Public POCs for CVE-2021-3988
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · janeczku · 2024-11-15 · 3 CVEs total
| CVE-2021-3987 | Improper Access Control in janeczku/calibre-web | |
| CVE-2021-3986 | Information Disclosure in janeczku/calibre-web |
IV. Related Vulnerabilities
Same product: janeczku/calibre-web
-
CVE-2021-3987
Improper Access Control in janeczku/calibre-web -
CVE-2021-3986
Information Disclosure in janeczku/calibre-web -
CVE-2023-2106
Weak Password Requirements in janeczku/calibre-web -
CVE-2022-2525
Improper Restriction of Excessive Authentication Attempts in -
CVE-2022-0990
Server-Side Request Forgery (SSRF) in janeczku/calibre-web
Same vendor: janeczku
-
CVE-2026-7709
janeczku Calibre-Web Endpoint kobo_auth.py generate_auth_tok -
CVE-2021-3987
Improper Access Control in janeczku/calibre-web -
CVE-2021-3986
Information Disclosure in janeczku/calibre-web -
CVE-2023-2106
Weak Password Requirements in janeczku/calibre-web -
CVE-2022-2525
Improper Restriction of Excessive Authentication Attempts in
Same weakness: CWE-79
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CVE-2026-105831
EspoCRM before 10.0.6 Unauthenticated Stored HTML Injection -
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IBM DataPower Gateway Cross-Site Scripting -
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IBM DataPower Gateway affected by cross-site scripting -
CVE-2026-27420
WordPress Zotpress plugin <= 7.4.4 - Cross Site Scripting (X -
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WordPress WP plugin Info Card plugin <= 6.3.5 - Cross Site S
V. Comments for CVE-2021-3988
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