What is CVE-2022-28101?

CVE-2022-28101 is a critical-severity vulnerability in Lyonbros Turtl, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2022-04-28.

How severe is CVE-2022-28101?

Critical severity. CVSS v3 base score is 9.0 out of 10.

XSS in Lyonbros Turtl

CVE-2022-28101

Turtlapp Turtle Note v0.7.2.6 does not filter the <meta> tag during markdown parsing, allowing attackers to execute HTML injection.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-04-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

Lyonbros Turtl — versions 0.7.2.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.cybercitadel.com/html-injection-turtl/ (Exploit, Third Party Advisory)
github.com/turtl/tracker/issues/404 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-28101?: CVE-2022-28101 is a critical-severity vulnerability in Lyonbros Turtl, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2022-04-28.
How severe is CVE-2022-28101?: Critical severity. CVSS v3 base score is 9.0 out of 10.