Critical
Security advisory
immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-3757
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:19 UTC · Revision 1
Source evidence
immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
osv:CVE-2021-3757
Complete source record
{
"id": "e2f3c5b84d47ef79e93c6733107b95c82e7c226829fc92fcd59af0052c0233a7",
"url": "https://osv.dev/vulnerability/CVE-2021-3757",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-3757",
"summary": "immer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
"evidence": "osv:CVE-2021-3757",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2021-3757",
"aliases": [
"CVE-2021-3757",
"GHSA-c36v-fmgq-m8hx"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/immerjs/immer",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "bfb8decc92ded85d035da4b0c70dd642bb25e451"
},
{
"fixed": "fa671e55ee9bd42ae08cc239102b665a23958237"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:immer_project:immer:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "9.0.5"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "fa671e55ee9bd42ae08cc239102b665a23958237"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v9.0.5",
"v9.0.4",
"v9.0.3",
"v9.0.2",
"v9.0.1",
"v9.0.0",
"v8.0.4",
"v8.0.3",
"v8.0.2",
"v8.0.1",
"v8.0.0",
"v7.0.15",
"v7.0.14",
"v7.0.13",
"v7.0.12",
"v7.0.11",
"v7.0.10",
"v7.0.9",
"v7.0.8",
"v7.0.7",
"v7.0.6",
"v7.0.5",
"v7.0.4",
"v7.0.3",
"v7.0.2",
"v7.0.1",
"v7.0.0",
"v6.0.9",
"v6.0.8",
"v6.0.7",
"v6.0.6",
"v6.0.5",
"v6.0.4",
"v6.0.3",
"v6.0.2",
"v6.0.1",
"v5.3.6",
"v6.0.0",
"v5.3.5",
"v5.3.4",
"v5.3.3",
"v5.3.2",
"v5.3.1",
"v5.3.0",
"v5.2.1",
"v5.2.0",
"v5.1.0",
"v5.0.2",
"v5.0.1",
"v5.0.0",
"v4.0.2",
"v4.0.1",
"v4.0.0",
"v3.3.0",
"v3.2.1",
"v3.2.0",
"v3.1.4",
"v3.1.3",
"v3.1.2",
"v3.1.1",
"v3.1.0",
"v3.0.0",
"v2.1.5",
"v2.1.4",
"v2.1.3",
"v2.1.2",
"v2.1.1",
"v2.1.0",
"v2.0.0",
"v1.12.1",
"v1.12.0",
"v1.11.1",
"v1.11.0",
"v1.10.5",
"v1.10.4",
"v1.10.3",
"v1.10.2",
"v1.10.1",
"v1.10.0",
"v1.9.3",
"v1.9.2",
"v1.9.1",
"v1.9.0",
"v1.8.2",
"v1.8.1",
"v1.8.0",
"v1.7.4",
"v1.7.3",
"v1.7.1",
"v1.7.0",
"v1.5.0",
"v1.4.0",
"v1.2.0",
"v1.1.3",
"v1.1.2",
"v1.1.0",
"v1.0.3",
"1.0.3",
"v1.0.1",
"1.0.0",
"v0.8.1",
"v0.8.0",
"v0.7.0",
"v0.6.0",
"v0.5.0",
"v0.4.2",
"0.4.0",
"v0.3.0",
"v0.2.2",
"v0.2.1",
"v0.2.0",
"v0.1.2",
"v0.1.1",
"v0.1.0",
"v0.0.4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3757.json"
}
}
],
"modified": "2026-10-20T10:53:52.158160659Z",
"provider": "osv",
"references": [
"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237",
"https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-3757",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 384708,
"published_at": "2021-09-02T12:15:07.617+00:00"
}