PT-2026-41456 · Macaron Notes Great Notebook · Macaron Notes Gear Notebook

Geovanni Ruiz · Published 2026-05-16 · Updated 2026-05-16 · CVE-2021-47970

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Macaron Notes 5.5 contains a denial of service vulnerability that allows attackers to crash the application by creating notes with excessively long character strings. Attackers can generate a payload containing 350000 repeated characters and paste it into a note field to trigger application crash and stop functionality.

Exploit

Fix

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2021-47970

Affected Products

Macaron Notes Gear Notebook

References · 3

• 🔥 https://exploit-db.com/exploits/49953 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47970 · Security Note
• https://vulncheck.com/advisories/macaron-notes-denial-of-service-via-buffer-overflow · Note