{"id":"CVE-2026-25128","summary":"fast-xml-parser has RangeError DoS Numeric Entities Bug","details":"fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 5.0.9 through 5.3.3, a RangeError vulnerability exists in the numeric entity processing of fast-xml-parser when parsing XML with out-of-range entity code points (e.g., `�` or `�`). This causes the parser to throw an uncaught exception, crashing any application that processes untrusted XML input. Version 5.3.4 fixes the issue.","aliases":["GHSA-37qj-frw5-hhjh"],"modified":"2026-04-02T13:14:04.766349Z","published":"2026-01-30T15:14:58.244Z","related":["CGA-6fx2-cvg4-r922"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25128.json","cwe_ids":["CWE-20","CWE-248"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25128.json"},{"type":"ADVISORY","url":"https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-37qj-frw5-hhjh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25128"},{"type":"FIX","url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/4e387f61c4a5cef792f6a2f42467013290bf95dc"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/naturalintelligence/fast-xml-parser","events":[{"introduced":"1d3923919e2a9f19a2db2f2918547693286130f3"},{"fixed":"4e387f61c4a5cef792f6a2f42467013290bf95dc"}]}],"versions":["v5.0.9","v5.1.0","v5.2.0","v5.2.1","v5.2.2","v5.2.3","v5.2.4","v5.2.5","v5.3.0","v5.3.1","v5.3.2","v5.3.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25128.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}