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TI-2021-03971 Aliases CVE-2021-20745GHSA-fgmm-f4rh-2m84

OS command injection in Takuya Matsuyama Inkdrop

Priority LOW 36CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.

Why it matters now

EPSS 0.00964 61st percentileScored 2026-11-07
Fix Fixed Inkdrop (Takuya Matsuyama): v5.3.1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Takuya MatsuyamaInkdropbefore v5.3.1v5.3.1Patch availableCNA
  • Inkdrop VendorTakuya Matsuyama Affected before v5.3.1 Fixed in v5.3.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:inkdrop:inkdrop:*:*:*:*:*:*:*:*before 5.3.1VulnerableInkdrop
  • cpe:2.3:a:inkdrop:inkdrop:*:*:*:*:*:*:*:* Versions before 5.3.1 Vulnerable ·Inkdrop

Remediation

  • Fix · CNA Inkdrop (Takuya Matsuyama) Fixed in v5.3.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20745
  2. 2026-10-03 Alias added: GHSA-fgmm-f4rh-2m84

References

Advisory 3

  • TI-2022-23038 An issue in Inkdrop v5.4.1 allows attackers to execute arbitrary commands via uploading a crafted markdown file. CVSS 3.1MEDIUM 6.1
  • TI-2023-23681 Code injection in Takuya Matsuyama Inkdrop CVSS 3.1HIGH 7.8

Sources

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