CVE-2026-35454: Coder Code-Marketplace

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Coder Code-Marketplace: up to and including 2.4.1

Published 2026-04-06. Last modified 2026-07-24.