{"id":"CVE-2023-26920","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-26920","generatedAt":"2026-10-23T22:03:37.235Z","title":"fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.","description":"fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.","published":"2023-12-12T17:15:08.000Z","lastModified":"2026-06-17T05:43:57.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-1321"],"affected":["naturalintelligence/fast xml parser"],"epss":{"score":0.01152,"percentile":0.66679,"date":"2026-10-22","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/advisories/GHSA-793h-6f7r-6qvm","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/advisories/GHSA-793h-6f7r-6qvm","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26920","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}