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High · 7.5 CVE-2021-47971 EUVD-2021-34828GHSA-w4w9-25xj-f9j4

My Notes Safe 5.3 Denial of Service via Buffer Overflow

Published May 16, 2026 · Updated May 18, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
my-notes-safe My Notes Safe 5.3 —

References