High
Security advisory
An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-10591
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:46 UTC · Revision 1
Source evidence
An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.
osv:CVE-2020-10591
Complete source record
{
"id": "5e550c7e2f4afd2e1ff70e7a00112810403b7dbcbcdaf320f79caaea0a8a07d5",
"url": "https://osv.dev/vulnerability/CVE-2020-10591",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-10591",
"summary": "An issue was discovered in Walmart Labs Concord before 1.44.0. CORS Access-Control-Allow-Origin headers have a potentially unsafe dependency on Origin headers, and are not configurable. This allows remote attackers to discover host information, nodes, API metadata, and references to usernames via api/v1/apikey.",
"evidence": "osv:CVE-2020-10591",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-10591",
"aliases": [
"CVE-2020-10591",
"GHSA-6566-9526-52v6"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/walmartlabs/concord",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "ea8aecb5e4fc3dbc84b05a4d0bbdced78e155b74"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:walmart:concord:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.44.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-10591.json"
}
}
],
"modified": "2026-10-20T10:51:38.968575966Z",
"provider": "osv",
"references": [
"https://github.com/walmartlabs/concord/compare/1.43.0...1.44.0",
"https://github.com/walmartlabs/concord/issues/22"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-10591",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 382724,
"published_at": "2020-03-15T21:15:11.88+00:00"
}