CVE-2026-91200
HIGH · 8.8Fresh NVD listing amplified; no PoC, no KEV, no urgent patching signal yet.
What: DevSpace versions up to 6.3.21 allow path traversal in tar extraction from in-pod sync streams, enabling arbitrary file write and code execution on developer workstations (CVSS 8.8).
Why it matters: Published yesterday; high CVSS score reflects code execution risk. No KEV listing yet, no public PoC confirmed in chatter, no vendor advisory visible in posts. Social signal is pure NVD/metadata amplification with no defender triage or exploitation reports.
Where it's seen: Three near-identical posts on Bluesky quoting NVD description verbatim; references to aggregator sites. No security researcher PoC, no vendor patch announcement, no defender discussion of active exploitation.
RISK: HIGH — High CVSS, code execution, but newly disclosed with no patch or mitigation visible.
Description
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.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Attack vector
- Network
- Complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Weaknesses
References
- https://github.com/devspace-sh/devspace
- https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/tar.go#L68-L82
- https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/util.go#L9-L11
- https://github.com/devspace-sh/devspace/issues/3290
- https://www.vulncheck.com/advisories/devspace-through-6.3.21-path-traversal-via-tar-extraction