What’s Vulnerable › Vulnerabilities

CVE-2021-41563: Tad Book3 - Stored XSS

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-08 · updated 2026-06-17
• Weakness: CWE-79

Description

Tad Book3 editing book function does not filter special characters. Unauthenticated attackers can remotely inject JavaScript syntax and execute stored XSS attacks.

Affected products

• Tad Book3: before 3.9 — fixed in 3.9

How to fix

Upgrade to a fixed version: Tad Book3 3.9. Check the vendor advisory for mitigations.

References

• https://www.twcert.org.tw/tw/cp-132-5167-2defb-1.html
• https://www.twcert.org.tw/tw/cp-132-5167-2defb-1.html

Get alerted when CVE-2021-41563 or the next vulnerability affects your stack