PatchTheCVECVE-2026-35454: The Code Extension Marketplace is an open-source alternative to the VS Code Marketplace
CVE-2026-35454 is a medium-severity flaw (CVSS 6.5) affecting code-marketplace. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 72%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2026-04-06 |
| Last modified | 2026-07-24 |
Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-35454?
code-marketplace: upgrade to newer than 2.4.1. Exact commands for each OS are on this page.
Is CVE-2026-35454 being exploited?
CVE-2026-35454 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-35454 affect?
CVE-2026-35454 affects code-marketplace. Severity is medium (CVSS 6.5). 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
How urgent is CVE-2026-35454?
Priority 30/100. No elevated risk signals yet.