CVE-2021-47971
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
May 16, 2026
Vendor
unknown
Description
My Notes Safe 5.3 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash.