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TI-2020-12516 Aliases CVE-2020-15899GHSA-p75g-gcv5-42qg

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

Priority LOW 34CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-345.

Summary

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

Why it matters now

EPSS 0.00754 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed grin (crates.io): 4.0.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—grin (crates.io)3.0.0 to before 4.0.04.0.0Patch availableGHSA-p75g-gcv5-42qg
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • grin (crates.io) Vendor— Affected 3.0.0 to before 4.0.0 Fixed in 4.0.0 Patch available GHSA-p75g-gcv5-42qg

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:grin:grin:*:*:*:*:*:*:*:*3.0.0 to before 4.0.0VulnerableGrin
  • cpe:2.3:a:grin:grin:*:*:*:*:*:*:*:* Versions 3.0.0 to before 4.0.0 Vulnerable ·Grin

Remediation

  • Fix · GHSA-p75g-gcv5-42qg grin (crates.io) Fixed in 4.0.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15899
  2. 2026-10-03 Alias added: GHSA-p75g-gcv5-42qg

References

Exploit 1

Advisory 2

  • TI-2019-06653 util/src/zip.rs in Grin before 1.0.2 mishandles suspicious files. CVSS 3.1CRITICAL 9.8
  • TI-2020-05460 Grin through 2.1.1 has Insufficient Validation. 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences