CVE-2021-47971
My Notes Safe 5.3 Denial of Service via Buffer Overflow
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-789 |
| Vendor | my-notes-safe |
| Product | my notes safe |
| Published | May 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
my-notes-safe / My Notes Safe
5.3
References
Credits
Geovanni Ruiz