{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-12T17:44:25.200","vulnerabilities":[{"cve":{"id":"CVE-2026-26278","sourceIdentifier":"security-advisories@github.com","published":"2026-02-19T20:25:43.717","lastModified":"2026-02-23T19:30:26.017","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. In versions 4.1.3 through 5.3.5, the XML parser can be forced to do an unlimited amount of entity expansion. With a very small XML input, it’s possible to make the parser spend seconds or even minutes processing a single request, effectively freezing the application. Version 5.3.6 fixes the issue. As a workaround, avoid using DOCTYPE parsing by `processEntities: false` option."},{"lang":"es","value":"fast-xml-parser permite a los usuarios validar XML, analizar XML a objeto JS, o construir XML desde objeto JS sin bibliotecas basadas en C/C++ y sin callback. En las versiones 4.1.3 a 5.3.5, el analizador XML puede ser forzado a realizar una cantidad ilimitada de expansión de entidades. Con una entrada XML muy pequeña, es posible hacer que el analizador dedique segundos o incluso minutos a procesar una única solicitud, congelando efectivamente la aplicación. La versión 5.3.6 corrige el problema. Como solución alternativa, evite usar el análisis de DOCTYPE mediante la opción 'processEntities: false'."}],"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:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-776"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.3","versionEndExcluding":"5.3.6","matchCriteriaId":"36BABE8E-2E99-48E8-8F1D-2B1CC69D5BB2"}]}]}],"references":[{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/commit/910dae5be2de2955e968558fadf6e8f74f117a77","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.6","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-jmr7-xgp7-cmfj","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]}]}}]}