Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dottie Project | Dottie | >= 2.0.4, < 2.0.7 |
Related Weaknesses (CWE)
References
- https://github.com/advisories/GHSA-4gxf-g5gf-22h4Not Applicable
- https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4dePatch
- https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9wExploitVendor Advisory
- https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9wExploitVendor Advisory
FAQ
What is CVE-2026-27837?
CVE-2026-27837 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 `7d3a...
How severe is CVE-2026-27837?
CVE-2026-27837 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27837?
Check the references section above for vendor advisories and patch information. Affected products include: Dottie Project Dottie.