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.

Code

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No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 16, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Sources

• CVE.orgVulnerability recordCVE-2021-47971

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2021-47971

  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

  nvd.nist.gov

References

• Reference · exploit-db.com
• Reference · vulncheck.com