CVE-2020-12439: Grin

Medium severity, CVSS 5.3. EPSS: 1.6% chance of exploitation in the next 30 days.

Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.

Affected products

• Grin Grin: before 3.1.0 (fixed in 3.1.0)

Published 2020-05-05. Last modified 2026-06-17.