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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.

PUBLISHED Reserved 2026-02-24 | Published 2026-02-26 | Updated 2026-02-26 | Assigner GitHub_M




MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Problem types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Product status

>= 2.0.4, < 2.0.7
affected

References

github.com/...tie.js/security/advisories/GHSA-r5mx-6wc6-7h9w exploit

github.com/...tie.js/security/advisories/GHSA-r5mx-6wc6-7h9w

github.com/...ommit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14

github.com/advisories/GHSA-4gxf-g5gf-22h4

cve.org (CVE-2026-27837)

nvd.nist.gov (CVE-2026-27837)

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