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TI-2021-17571 Aliases CVE-2021-40531GHSA-jf84-45wf-mjgm

Sketch before 75 allows library feeds to be used to bypass file quarantine.

Priority HIGH 67CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.

Summary

Sketch before 75 allows library feeds to be used to bypass file quarantine. Files are automatically downloaded and opened, without the com.apple.quarantine extended attribute. This results in remote code execution, as demonstrated by CommandString in a terminal profile to Terminal.app.

Why it matters now

EPSS 0.32998 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:sketch:sketch:*:*:*:*:*:*:*:*before 75VulnerableSketch
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
  • cpe:2.3:a:sketch:sketch:*:*:*:*:*:*:*:* Versions before 75 Vulnerable ·Sketch
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40531
  2. 2026-10-03 Alias added: GHSA-jf84-45wf-mjgm

References

Exploit 1

Patch 1

  • TI-2002-01966 The file preview functionality in Sketch 0.6.12 and earlier allows remote attackers to… CVSS 2.0HIGH 10.0

Sources

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