{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T04:04:18.596","vulnerabilities":[{"cve":{"id":"CVE-2026-25896","sourceIdentifier":"security-advisories@github.com","published":"2026-02-20T21:19:27.470","lastModified":"2026-03-02T14:54:02.760","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5."},{"lang":"es","value":"fast-xml-parser permite a los usuarios validar XML, analizar XML a objeto JS, o construir XML desde objeto JS sin librerías basadas en C/C++ y sin callback. Desde la versión 4.1.3 hasta antes de la 5.3.5, un punto (.) en un nombre de entidad DOCTYPE es tratado como un comodín de expresión regular durante el reemplazo de entidades, permitiendo a un atacante sombrear entidades XML incorporadas (<, >, &, \", ') con valores arbitrarios. Esto omite la codificación de entidades y conduce a XSS cuando la salida analizada es renderizada. Esta vulnerabilidad se corrige en la versión 5.3.5."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":4.7}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-185"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.3","versionEndExcluding":"5.3.5","matchCriteriaId":"CC7C6F3C-019C-4D48-A09F-D926B57DC0BC"}]}]}],"references":[{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/943ef0eb1b2d3284e72dd74f44a042ee9f07026e","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/ddcd0acf26ddd682cb0dc15a2bd6aa3b96bb1e69","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.5","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-m7jm-9gc2-mpf2","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}