{"cve":"CVE-2023-26920","nvd":{"published":"2023-12-12T17:15:07.720","modified":"2026-06-17T05:43:57.063","status":"Modified","description":"fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-1321"],"references":["https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7","https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804","https://github.com/advisories/GHSA-793h-6f7r-6qvm","https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7","https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804"],"products":["naturalintelligence:fast_xml_parser"],"source":"nvd","synced_at":"2026-10-19T21:42:34.585441961+00:00"},"epss":{"cve":"CVE-2023-26920","score":0.01152,"percentile":0.66947,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-793h-6f7r-6qvm","url":"https://osv.dev/vulnerability/GHSA-793h-6f7r-6qvm","summary":"Druid ingestion system Authenticated users can read data from other sources than intended","modified":"2026-07-08T06:53:00.349295664Z","packages":[{"ecosystem":"Maven","name":"org.apache.druid:druid-core","purl":"pkg:maven/org.apache.druid/druid-core","ranges":["<0.21.0"],"fixed":["0.21.0"]}]},{"id":"GHSA-x3cc-x39p-42qx","url":"https://osv.dev/vulnerability/GHSA-x3cc-x39p-42qx","summary":"fast-xml-parser vulnerable to Prototype Pollution through tag or attribute name","modified":"2026-07-08T06:49:36.622686398Z","packages":[{"ecosystem":"npm","name":"fast-xml-parser","purl":"pkg:npm/fast-xml-parser","ranges":["<4.1.2"],"fixed":["4.1.2"]}]}],"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."]}