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TI-2026-27585 Aliases CVE-2026-35454GHSA-8x9r-hvwg-c55h

Code Extension Marketplace has a Zip Slip Path Traversal

Priority MEDIUM 44CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

The Code Extension Marketplace is an open-source alternative to the VS Code Marketplace. Prior to 2.4.2, Zip Slip vulnerability in coder/code-marketplace allowed a malicious VSIX file to write arbitrary files outside the extension directory. ExtractZip passed raw zip entry names to a callback that wrote files via filepath.Join with no boundary check; filepath.Join resolved .. components but did not prevent the result from escaping the base path. This vulnerability is fixed in 2.4.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Fix Fixed code-marketplace (coder): 2.4.2github.com/coder/code-marketplace (Go): 1.2.3-0.20260402184705-988440dee05f

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
codercode-marketplacebefore 2.4.22.4.2Patch availableCNA
—github.com/coder/code-marketplace (Go)before 1.2.3-0.20260402184705-988440dee05f1.2.3-0.20260402184705-988440dee05fPatch availableGHSA-8x9r-hvwg-c55h
  • code-marketplace Vendorcoder Affected before 2.4.2 Fixed in 2.4.2 Patch available CNA
  • github.com/coder/code-marketplace (Go) Vendor— Affected before 1.2.3-0.20260402184705-988440dee05f Fixed in 1.2.3-0.20260402184705-988440dee05f Patch available GHSA-8x9r-hvwg-c55h

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:coder:code-marketplace:*:*:*:*:*:*:*:*up to 2.4.1Vulnerablecoder
  • cpe:2.3:a:coder:code-marketplace:*:*:*:*:*:*:*:* Versions up to 2.4.1 Vulnerable ·coder

Remediation

  • Fix · CNA code-marketplace (coder) Fixed in 2.4.2
  • Fix · GHSA-8x9r-hvwg-c55h github.com/coder/code-marketplace (Go) Fixed in 1.2.3-0.20260402184705-988440dee05f Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35454
  2. 2026-10-03 Alias added: GHSA-8x9r-hvwg-c55h

References

Advisory 2

Other 3

Sources

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