What is CVE-2021-3988?

CVE-2021-3988 is a medium-severity vulnerability in Janeczku Calibre-Web, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-11-15.

How severe is CVE-2021-3988?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Janeczku Calibre-Web

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (28.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Janeczku Calibre-web
Janeczku Janeczku/calibre-web — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@huntr.dev (Exploit)
security@huntr.dev (Patch)

Frequently asked questions

What is CVE-2021-3988?: CVE-2021-3988 is a medium-severity vulnerability in Janeczku Calibre-Web, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-11-15.
How severe is CVE-2021-3988?: Medium severity. CVSS v3 base score is 6.1 out of 10.