CVE-2026-27837

Name	CVE-2026-27837
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1129097

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-dottie (PTS)	bullseye	2.0.2-1+deb11u1	vulnerable
	bookworm	2.0.2-4+deb12u1	vulnerable
	trixie	2.0.6+~2.0.5-2	vulnerable
	forky, sid	2.0.7+~2.0.7-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-dottie	source	(unstable)	2.0.7+~2.0.7-1			1129097

Notes

[trixie] - node-dottie <no-dsa> (Minor issue)
[bookworm] - node-dottie <no-dsa> (Minor issue)
[bullseye] - node-dottie <postponed> (Minor issue)
https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w
Fixed by: https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14 (v2.0.7)
CVE exists because of an incomplete fix for CVE-2023-26132.