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CVE-2026-27837

MEDIUM

6.3

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.

CVE Details

CVSS v3.1 Score6.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/26/2026

Last Modified2/28/2026

Sourcenvd

Honeypot Sightings0

Affected Products

dottie_project:dottie

Weaknesses (CWE)

CWE-1321

References

https://github.com/advisories/GHSA-4gxf-g5gf-22h4(security-advisories@github.com)

https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14(security-advisories@github.com)

https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w(security-advisories@github.com)

https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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