What is GHSA-w4w9-25xj-f9j4?

GHSA-w4w9-25xj-f9j4 is a security advisory published by GitHub Security Advisories with High severity. My Notes Safe 5.3 contains a denial of service vulnerability that allows attackers to crash the...

Which CVE IDs does GHSA-w4w9-25xj-f9j4 cover?

GHSA-w4w9-25xj-f9j4 covers the following CVE IDs: CVE-2021-47971. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w4w9-25xj-f9j4?

GHSA-w4w9-25xj-f9j4 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-w4w9-25xj-f9j4HighCVSS 7.5

My Notes Safe 5.3 contains a denial of service vulnerability that allows attackers to crash the...

Vendor

GitHub Security Advisories

Published

May 16, 2026

Last Modified

May 16, 2026

🔗 CVE IDs covered (1)

CVE-2021-47971 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2021-47971
https://www.exploit-db.com/exploits/49954
https://www.vulncheck.com/advisories/my-notes-safe-denial-of-service-via-buffer-overflow
https://github.com/advisories/GHSA-w4w9-25xj-f9j4