What is CVE-2021-47969?

CVE-2021-47969 is a high-severity vulnerability in Color-notes Color Notes, classified under CWE-789. CVSS score: 7.5/10. Published 2026-05-16.

How severe is CVE-2021-47969?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Color-notes Color Notes

CVE-2021-47969

Color Notes 1.4 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 350,000 repeated characte…

EPSS: 0.001 (16.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Color-notes Color Notes — versions 1.4

Weakness classification (CWE)

CWE-789

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47969?: CVE-2021-47969 is a high-severity vulnerability in Color-notes Color Notes, classified under CWE-789. CVSS score: 7.5/10. Published 2026-05-16.
How severe is CVE-2021-47969?: High severity. CVSS v3 base score is 7.5 out of 10.