CVE-2026-27837
Dottie vulnerable to prototype pollution bypass via non-first path segments in set() and transform()
CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1321 |
| Vendor | mickhansen |
| Product | dottie.js |
| Published | Feb 26, 2026 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
mickhansen / dottie.js
>= 2.0.4, < 2.0.7