CVE-2020-12439
Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
NVD Score used
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
CVE-2020-12439- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-404
- Updated
- 2026-11-02
CVE List No score
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
CVE-2020-12439- Updated
- 2026-11-02
EUVDEUVD-2022-2875 No score
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
EUVD-2022-2875- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6x52-88cq-55q5
Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
GHSA-6x52-88cq-55q5- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSV
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
CVE-2020-12439- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVGHSA-6x52-88cq-55q5
Grin allows attackers to adversely affect availability of data on a Mimblewimble blockchain
Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain.
- Record
GHSA-6x52-88cq-55q5- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
grincrates.io |
before 3.1.0 | 3.1.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-12439 is a medium vulnerability (CVSS 5.3) in Grin, published May 5, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.55%, the 75th percentile. Fixed in grin 3.1.0.