# CVE-2026-91200 — devspace

> As of 2026-09-15, CVE-2026-91200 is a HIGH-severity vulnerability in devspace, CVSS v3.1 8.8, EPSS 0.4% (35.5th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-91200 as of 2026-09-15; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-15

## What is CVE-2026-91200?

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.

The record classifies CVE-2026-91200 under weakness class [CWE-22](https://intel.threadlinqs.com/cwe/CWE-22). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 21 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.4% probability of exploitation in the next 30 days, higher than 35.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-14, last modified 2026-09-15

## Is CVE-2026-91200 being exploited?

It currently carries a trending score of 39 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **devspace**: devspace

## How to fix CVE-2026-91200

No vendor patch reference has been recorded for CVE-2026-91200 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-91200

No threat campaign in the Threadlinqs corpus currently references CVE-2026-91200, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-09-15. This product uses the NVD API but is not endorsed or certified by the NVD.

**Technical analysis**

- [github.com — technical description](https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/tar.go#L68-L82)
- [github.com — technical description (util)](https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/util.go#L9-L11)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/devspace-through-6.3.21-path-traversal-via-tar-extraction)

**Issue tracking and product pages**

- [github.com — issue tracking](https://github.com/devspace-sh/devspace/issues/3290)
- [github.com — product](https://github.com/devspace-sh/devspace)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-91200
Full detection coverage and IOCs for threats exploiting CVE-2026-91200 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp