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9.9

DevSpace 6.3.21 allows malicious container to write files on workstation

CVE-2026-91200 · published 22 days ago
Summary

The DevSpace tool (versions up to 6.3.21) can be tricked by a compromised container into creating or overwriting files on the developer's computer. This could let an attacker run unauthorized code on the workstation. Update DevSpace to a newer version or restrict containers to only trusted sources to mitigate the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
devspace devspace <= 6.3.21
Original advisory text
DevSpace through 6.3.21 Path Traversal via tar extraction
DevSpace through 6.3.21 fails to reject parent-directory segments in tar entry names from the in-pod sync stream. Attackers operating a malicious container can stream tar entries with traversal sequences to write arbitrary files on the developer workstation, enabling code execution.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.9 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-22Path Traversal
Timeline
Published14 Sep 2026
Updated7 Oct 2026
First seen14 Sep 2026
Sources
CVE-2026-91200 · NVD
CVE-2026-91200 · MITRE
CVE-2026-91200 · OSV
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