CVE-2026-27837
Medium
Description
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.
SeverityMedium
CVSS6.3
Exploit probability—
ProductDottie
PublishedFeb 26, 2026
First seenFeb 26, 2026
Weakness typeCWE-1321Prototype pollution
How to fix
Update
- dottie_project dottie2.0.7 or later
- dottie2.0.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dottie_project dottie | 2.0.4 ≤ v < 2.0.7 | 2.0.7 |
| dottienpm | 2.0.4 ≤ v < 2.0.7 | 2.0.7 |
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