Critical
node-dottie — security advisory
Dottie provides nested object access and manipulation in JavaScript. Versions 2.0.4 through 2.0.6 contain an incomplete fix for CVE-2023-26132. The prototype pollution guard introduced in commit `7d3aee1` only validates the first segment of a dot-separated path, allowing an attacker to bypass the protection by placing `__proto__` at any position other than the first. Both `dottie.set()` and `dottie.transform()` are affected. Version 2.0.7 contains an updated fix to address the residual vulnerability.
- Products
- node-dottie
- Affected versions
- 2.0.2-1, 2.0.2-1ubuntu0.1~esm1, 2.0.2-3, 2.0.2-4, 2.0.2-4ubuntu0.1~esm1, 2.0.6+~2.0.5-2, 2.0.7+~2.0.7-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-27837
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:56 UTC · Revision 1
Source evidence
Dottie provides nested object access and manipulation in JavaScript. Versions 2.0.4 through 2.0.6 contain an incomplete fix for CVE-2023-26132. The prototype pollution guard introduced in commit `7d3aee1` only validates the first segment of a dot-separated path, allowing an attacker to bypass the protection by placing `__proto__` at any position other than the first. Both `dottie.set()` and `dottie.transform()` are affected. Version 2.0.7 contains an updated fix to address the residual vulnerability.
osv:UBUNTU-CVE-2026-27837
node-dottie
Fixed versions: Not specified
node-dottie
Fixed versions: Not specified
node-dottie
Fixed versions: Not specified
node-dottie
Fixed versions: Not specified
node-dottie
Fixed versions: Not specified
node-dottie
Fixed versions: Not specified
Complete source record
{
"id": "c0133d03d38872b94ca414fd00911442a94b591a0930f734e20a2e388893d9ae",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-27837",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-27837",
"summary": "Dottie provides nested object access and manipulation in JavaScript. Versions 2.0.4 through 2.0.6 contain an incomplete fix for CVE-2023-26132. The prototype pollution guard introduced in commit `7d3aee1` only validates the first segment of a dot-separated path, allowing an attacker to bypass the protection by placing `__proto__` at any position other than the first. Both `dottie.set()` and `dottie.transform()` are affected. Version 2.0.7 contains an updated fix to address the residual vulnerability.",
"evidence": "osv:UBUNTU-CVE-2026-27837",
"products": [
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"name": {
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"evidence": "/affected/0/package/name"
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"affected_versions": [
{
"value": "2.0.2-1",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/5/versions"
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],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-27837",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
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"events": [
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"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
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"2.0.2-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27837.json"
},
"ecosystem_specific": {
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"versions": [
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"package": {
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2.0.6+~2.0.5-2"
],
"database_specific": {
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},
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"ecosystem": "Ubuntu:25.10"
},
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2.0.7+~2.0.7-1"
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"ecosystem": "Ubuntu:26.04:LTS"
},
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},
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}
],
"modified": "2026-10-17T12:56:18.005495521Z",
"provider": "osv",
"upstream": [
"CVE-2026-27837"
],
"references": [
"https://ubuntu.com/security/CVE-2026-27837",
"https://www.cve.org/CVERecord?id=CVE-2026-27837",
"https://github.com/advisories/GHSA-4gxf-g5gf-22h4",
"https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14",
"https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w"
]
},
"related_cves": [
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"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 355160,
"published_at": "2026-02-26T01:16:00+00:00"
}