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.
References
Configurations
History
27 Feb 2026, 20:22
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/NaturalIntelligence/fast-xml-parser/commit/4e387f61c4a5cef792f6a2f42467013290bf95dc - Patch | |
| References | () https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.4 - Release Notes | |
| References | () https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-37qj-frw5-hhjh - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:* | |
| First Time |
Naturalintelligence
Naturalintelligence fast-xml-parser |
11 Feb 2026, 19:15
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) 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. |
30 Jan 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-30 16:16
Updated : 2026-02-27 20:22
NVD link : CVE-2026-25128
Mitre link : CVE-2026-25128
CVE.ORG link : CVE-2026-25128
JSON object : View
Products Affected
naturalintelligence
- fast-xml-parser