{"cve":"CVE-2026-114142","nvd":{"published":"2026-10-21T21:17:56.820","modified":"2026-10-22T16:48:25.420","status":"Deferred","description":"toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() can write attacker-controlled properties to Object.prototype because quoteDottedString() in lib/compiler.js produces the same bookkeeping string for distinct quoted key paths, allowing addTableArray() to clear another key's guard. The assign() path then descends through an unowned Date value without applying the owned-container check and can reach the prototype chain. Objects created elsewhere in the process can inherit the injected property. This issue is fixed in version 5.0.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.8},"cvss_v3":null,"cwes":["CWE-1321"],"references":["https://github.com/BinaryMuse/toml-node/commit/609c873fffea0a27ebe5b4dd098eed2b3daf3606","https://github.com/BinaryMuse/toml-node/releases/tag/v5.0.1","https://github.com/BinaryMuse/toml-node/security/advisories/GHSA-h895-cgqg-jf52"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:28.036610720+00:00"},"epss":{"cve":"CVE-2026-114142","score":0.00395,"percentile":0.33396,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-h895-cgqg-jf52","url":"https://osv.dev/vulnerability/GHSA-h895-cgqg-jf52","summary":"toml-node: Prototype pollution: parsing a TOML document can write to Object.prototype","modified":"2026-10-22T16:45:03.731113123Z","packages":[{"ecosystem":"npm","name":"tome","purl":"pkg:npm/tome","ranges":["<5.0.1"],"fixed":["5.0.1"]}]}],"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."]}