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Case File

CVE-2021-3988

MEDIUM · CVSS 6.1 EPSS 0.36% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-11-15 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.1. It affects Java. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-3988
Severity
MEDIUM
CVSS
6.1
EPSS
0.36%
Java

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)