CVE-2020-15899

Name: CVE-2020-15899
Creator: NVD / NIST
Published: 2020-07-28T18:15:20.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2020-15899 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Grin 3.0.0 before 4.0.0 has insufficient validation of data related to Mimblewimble.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

Grin 3.0.0 before 4.0.0 has insufficient validation of data related to Mimblewimble.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.75%

50.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-345

Affected Software

Vendor	Product	Versions
Grin	Grin	>= 3.0.0, < 4.0.0

References

https://github.com/mimblewimble/grin-security/blob/master/CVEs/CVE-2020-15899.mdExploit, Patch, Third Party Advisory
https://github.com/mimblewimble/grin/compare/v3.1.1...v4.0.0Release Notes, Third Party Advisory
https://github.com/mimblewimble/grin-security/blob/master/CVEs/CVE-2020-15899.mdExploit, Patch, Third Party Advisory
https://github.com/mimblewimble/grin/compare/v3.1.1...v4.0.0Release Notes, Third Party Advisory

Timeline

Published: Jul 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15899?

Grin 3.0.0 before 4.0.0 has insufficient validation of data related to Mimblewimble.

How severe is CVE-2020-15899?

CVE-2020-15899 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15899?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15899?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST