High
DevSpace through 6.3.21 Path Traversal via tar extraction
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-91200
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 15:58 UTC · Revision 1
Source evidence
DevSpace through 6.3.21 Path Traversal via tar extraction
core-osv · Original sourcePublished 14 Sept 2026, 22:10 UTC
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.
osv:CVE-2026-91200
Complete source record
{
"id": "440e2ec553e05b5eb54b215b0f838ee4fa345f0a9f04cad484e841c335e0957e",
"url": "https://osv.dev/vulnerability/CVE-2026-91200",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DevSpace through 6.3.21 Path Traversal via tar extraction",
"summary": "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.",
"evidence": "osv:CVE-2026-91200",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-91200",
"aliases": [
"CVE-2026-91200"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/devspace-sh/devspace",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "7f272dcf90653fa9b42bc4347f7f3f9a52b0e8b5"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "6.3.21"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "6.3.21"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91200.json"
}
}
],
"modified": "2026-10-28T02:30:51.090296508Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91200.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-91200",
"https://www.vulncheck.com/advisories/devspace-through-6.3.21-path-traversal-via-tar-extraction",
"https://github.com/devspace-sh/devspace/issues/3290",
"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"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91200.json"
}
},
"related_cves": [
{
"value": "CVE-2026-91200",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 519816,
"published_at": "2026-09-14T22:10:57.135+00:00"
}