CVE-2026-91200

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 24, 2026

Advisory Details (5)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

DevSpace through 6.3.21 Path Traversal via tar extraction | Advisories | VulnCheck

https://www.vulncheck.com/advisories/devspace-through-6.3.21-path-traversal-via-tar-extraction
generic

devspace/pkg/devspace/sync/util.go at 7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5 · devspace-sh/devspace · GitHub

https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/util.go#L9-L11
generic

devspace/pkg/devspace/sync/tar.go at 7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5 · devspace-sh/devspace · GitHub

https://github.com/devspace-sh/devspace/blob/7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5/pkg/devspace/sync/tar.go#L68-L82
generic

GitHub - devspace-sh/devspace: DevSpace - The Fastest Developer Tool for Kubernetes ⚡ Automate your deployment workflow with DevSpace and develop software directly inside Kubernetes. · GitHub

https://github.com/devspace-sh/devspace
generic

directory traversal arbitrary file write during downstream file sync · Issue #3290 · devspace-sh/devspace · GitHub

https://github.com/devspace-sh/devspace/issues/3290

Vendor Advisories for CVE-2026-91200(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 27× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 03:42 UTCGHSA enrichment
  2. 2026-09-24 14:53 UTCEG score recompute
  3. 2026-09-24 14:53 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 06:11 UTCEG score recompute
  6. 2026-09-24 06:11 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:21 UTCGHSA enrichment
  9. 2026-09-23 16:48 UTCGHSA enrichment
  10. 2026-09-23 03:59 UTCEG score recompute
  11. 2026-09-23 03:59 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 15:09 UTCGHSA enrichment
  14. 2026-09-22 02:20 UTCEG score recompute
  15. 2026-09-22 02:20 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 13:30 UTCGHSA enrichment
  18. 2026-09-21 00:41 UTCEG score recompute
  19. 2026-09-21 00:41 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 11:50 UTCGHSA enrichment
  22. 2026-09-19 22:54 UTCEG score recompute
  23. 2026-09-19 22:54 UTCGHSA enrichment
  24. 2026-09-19 10:04 UTCGHSA enrichment
  25. 2026-09-18 21:15 UTCEG score recompute
Show 21 more
  1. 2026-09-18 21:15 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 08:13 UTCEG score recompute
  4. 2026-09-18 08:13 UTCGHSA enrichment
  5. 2026-09-17 19:32 UTCEPSS rescore
  6. 2026-09-17 19:23 UTCGHSA enrichment
  7. 2026-09-17 05:04 UTCGHSA enrichment
  8. 2026-09-16 16:15 UTCEG score recompute
  9. 2026-09-16 16:14 UTCGHSA enrichment
  10. 2026-09-16 14:09 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-16 03:24 UTCGHSA enrichment
  13. 2026-09-15 14:34 UTCEG score recompute
  14. 2026-09-15 14:34 UTCGHSA enrichment
  15. 2026-09-15 13:58 UTCEG score recompute
  16. 2026-09-15 13:58 UTCGHSA enrichment
  17. 2026-09-15 12:12 UTCEG score recompute
  18. 2026-09-15 12:12 UTCGHSA enrichment
  19. 2026-09-14 23:22 UTCEG score recompute
  20. 2026-09-14 22:24 UTCEG score recompute
  21. 2026-09-14 22:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91200?
CVE-2026-91200 is a high vulnerability published on September 14, 2026. 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.
When was CVE-2026-91200 disclosed?
CVE-2026-91200 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91200 actively exploited?
CVE-2026-91200 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.0% of all scored CVEs.
What is the CVSS score of CVE-2026-91200?
CVE-2026-91200 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-91200?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91200, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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