CVE-2026-27837

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Source
https://cve.org/CVERecord?id=CVE-2026-27837
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27837.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-27837
Aliases
Downstream
Related
Published
2026-02-26T00:19:24.289Z
Modified
2026-07-15T01:49:18.230398137Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L CVSS Calculator
Summary
Dottie vulnerable to prototype pollution bypass via non-first path segments in set() and transform()
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27837.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1321"
    ]
}
References

Affected packages

Git / github.com/mickhansen/dottie.js

Affected ranges

Type
GIT
Repo
https://github.com/mickhansen/dottie.js
Events
Introduced
e0c8baee4e1551b6ce63cc0b5eef18e8362482c2
Fixed
334c32b80ed536522b567ee6a844caf8e5fef9c3
Fixed
7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14
Database specific 
{
    "cpe": "cpe:2.3:a:dottie_project:dottie:*:*:*:*:*:node.js:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "2.0.4"
        },
        {
            "fixed": "2.0.7"
        }
    ]
}

Affected versions

v2.*
v2.0.4
v2.0.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27837.json"