{"id":"DEBIAN-CVE-2026-27837","details":"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.","modified":"2026-09-01T16:04:26.865364579Z","published":"2026-02-26T01:16:24.937Z","upstream":["CVE-2026-27837"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-27837"}],"affected":[{"package":{"name":"node-dottie","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-dottie?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.2-4","2.0.2-4+deb12u1","2.0.6+~2.0.5-1","2.0.6+~2.0.5-2","2.0.7+~2.0.7-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27837.json"}},{"package":{"name":"node-dottie","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-dottie?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.6+~2.0.5-2","2.0.7+~2.0.7-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27837.json"}},{"package":{"name":"node-dottie","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-dottie?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7+~2.0.7-1"}]}],"versions":["2.0.6+~2.0.5-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27837.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}