CVE-2026-27837

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.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/advisories/GHSA-4gxf-g5gf-22h4	Not Applicable
https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14	Patch
https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w	Exploit Vendor Advisory
https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dottie_project:dottie:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-02-26 01:16

Updated : 2026-02-28 00:58

NVD link : CVE-2026-27837

Mitre link : CVE-2026-27837

CVE.ORG link : CVE-2026-27837

JSON object : View

Products Affected

dottie_project

dottie

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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