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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-27837

Dottie vulnerable to prototype pollution bypass via non-first path segments in set() and transform()

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

mickhansen dottie.js

  • >= 2.0.4, < 2.0.7affected

References