Path Traversal in Coder Code-Marketplace
CVE-2026-35454
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.003 (26.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Coder Code-marketplace — versions < 2.4.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-35454?
- CVE-2026-35454 is a medium-severity vulnerability in Coder Code-Marketplace, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-04-06.
- How severe is CVE-2026-35454?
- Medium severity. CVSS v3 base score is 6.5 out of 10.