What is CVE-2021-41565?

CVE-2021-41565 is a medium-severity vulnerability in Tad Tadtools, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-08.

How severe is CVE-2021-41565?

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

XSS in Tad Tadtools

CVE-2021-41565

TadTools special page parameter does not properly restrict the input of specific characters, thus remote attackers can inject JavaScript syntax without logging in, and further perform reflective XSS attacks.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-10-08 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.007 (53.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Tad Tadtools — versions 0
Tadtools Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.twcert.org.tw/tw/cp-132-5169-327ef-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-41565?: CVE-2021-41565 is a medium-severity vulnerability in Tad Tadtools, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-08.
How severe is CVE-2021-41565?: Medium severity. CVSS v3 base score is 6.1 out of 10.