{"cve":"CVE-2026-27837","nvd":{"published":"2026-02-26T01:16:24.937","modified":"2026-06-17T10:27:46.133","status":"Analyzed","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-1321"],"references":["https://github.com/advisories/GHSA-4gxf-g5gf-22h4","https://github.com/mickhansen/dottie.js/commit/7e8fa1345a4b46325f0eab8d7aeb1c4deaefdb14","https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w","https://github.com/mickhansen/dottie.js/security/advisories/GHSA-r5mx-6wc6-7h9w"],"products":["dottie_project:dottie"],"source":"nvd","synced_at":"2026-10-19T22:24:17.937441719+00:00"},"epss":{"cve":"CVE-2026-27837","score":0.00365,"percentile":0.30382,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r5mx-6wc6-7h9w","url":"https://osv.dev/vulnerability/GHSA-r5mx-6wc6-7h9w","summary":"dottie is vulnerable to Prototype Pollution bypass via non-first path segments in set() and transform()","modified":"2026-02-26T22:11:18.547258Z","packages":[{"ecosystem":"npm","name":"dottie","purl":"pkg:npm/dottie","ranges":[">=2.0.4 <2.0.7"],"fixed":["2.0.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}