UnratedFix available
lodash, lodash-es — security advisory
This notice tracks CVE-2026-4800 for lodash, lodash-es. Fixed versions are listed in the package details.
- Products
- lodash, lodash-es
- Affected versions
- Not specified
- Fixed versions
- 4.17.21+echo.1
- CVEs
- CVE-2026-4800
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 08:06 UTC · Revision 1
Source evidence
ECHO-276a-c790-4db2
osv:ECHO-276a-c790-4db2
lodash
Fixed versions: 4.17.21+echo.1
lodash-es
Fixed versions: 4.17.21+echo.1
Complete source record
{
"id": "0b89ec244a1387a134e309259fe0e2340adcc84a915e0c496e986371c4154c27",
"url": "https://osv.dev/vulnerability/ECHO-276a-c790-4db2",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ECHO-276a-c790-4db2",
"summary": "ECHO-276a-c790-4db2",
"evidence": "osv:ECHO-276a-c790-4db2",
"products": [
{
"name": {
"value": "lodash",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.21+echo.1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "lodash-es",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.17.21+echo.1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "ECHO-276a-c790-4db2",
"aliases": [
"ECHO-276a-c790-4db2"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.21+echo.1"
}
]
}
],
"package": {
"name": "lodash",
"purl": "pkg:npm/lodash",
"ecosystem": "Echo:npm"
},
"database_specific": {
"source": "https://advisory.echohq.com/osv/ECHO-276a-c790-4db2.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.17.21+echo.1"
}
]
}
],
"package": {
"name": "lodash-es",
"purl": "pkg:npm/lodash-es",
"ecosystem": "Echo:npm"
},
"database_specific": {
"source": "https://advisory.echohq.com/osv/ECHO-276a-c790-4db2.json"
}
}
],
"modified": "2026-10-19T12:00:07.689Z",
"provider": "osv",
"upstream": [
"CVE-2026-4800",
"GHSA-r5fr-rjxr-66jc"
],
"references": [
"https://advisory.echohq.com/cve/CVE-2026-4800",
"https://github.com/advisories/GHSA-r5fr-rjxr-66jc"
]
},
"related_cves": [
{
"value": "CVE-2026-4800",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 374684,
"published_at": "2026-10-01T00:00:31.748+00:00"
}