PT-2026-41456 · Unknown · Macaron Notes

Geovanni Ruiz · CVE-2021-47970 · Published 2026-05-16 · Updated 2026-05-17

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Macaron Notes version 5.5

Description A denial of service issue allows attackers to crash the application by creating notes with excessively long character strings. Specifically, pasting a payload containing 350,000 repeated characters into a note field triggers an application crash, resulting in a complete loss of functionality.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2021-47970

Affected Products

Macaron Notes

References · 5

• 🔥 https://exploit-db.com/exploits/49953 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47970 · Security Note
• https://t.me/CVEtracker/54010 · Telegram Post
• https://vulncheck.com/advisories/macaron-notes-denial-of-service-via-buffer-overflow · Note
• https://twitter.com/CVEnew/status/2055866575626932300 · Twitter Post