Grin through 2.1.1 has Insufficient Validation.
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Grin through 2.1.1 has Insufficient Validation.
Why it matters now
EPSS 0.01324 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed grin (crates.io): 3.0.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | grin (crates.io) | before 3.0.0 | 3.0.0 | Patch available | GHSA-7w6p-rwhg-7h3g |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- grin (crates.io) Vendor— Affected before 3.0.0 Fixed in 3.0.0 Patch available GHSA-7w6p-rwhg-7h3g
Remediation
- Fix · GHSA-7w6p-rwhg-7h3g grin (crates.io) Fixed in 3.0.0 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-6638
- 2026-10-03 Alias added: GHSA-7w6p-rwhg-7h3g
References
More Grin vulnerabilities
- TI-2019-06653 util/src/zip.rs in Grin before 1.0.2 mishandles suspicious files. CVSS 3.1CRITICAL 9.8
- TI-2020-12516 Grin 3.0.0 before 4.0.0 has insufficient validation of data related to Mimblewimble. CVSS 3.1HIGH 7.5
- TI-2020-09951 Grin before 3.1.0 allows attackers to adversely affect availability of data on a Mimblewimble blockchain. CVSS 3.1MEDIUM 5.3
Sources
- CVE-2020-6638 · CVE Program
- CVE-2020-6638 · NVD
- FIRST EPSS
- GHSA-7w6p-rwhg-7h3g · GitHub Advisory Database · CC BY 4.0
- CVE-2020-6638 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences