CVE-2026-44242

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{"affected": [{"affectedData": [{"product": "micronaut-core", "vendor": "micronaut-projects", "versions": [{"status": "affected", "version": "< 4.10.22"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Prior to 4.10.22, the bundleCache is keyed by (Locale, baseName) where the locale originates from the HTTP Accept-Language header. In applications that explicitly register a ResourceBundleMessageSource bean and serve HTML error responses, an unauthenticated attacker can exhaust heap memory by sending requests with large numbers of unique Accept-Language values, each causing a new entry in the unbounded bundleCache. This vulnerability is fixed in 4.10.22."}, {"lang": "es", "value": "Micronaut Framework es un framework Java de pila completa basado en JVM dise\u00f1ado para construir aplicaciones JVM modulares y f\u00e1cilmente testeables. Antes de la versi\u00f3n 4.10.22, el bundleCache se indexa por (Locale, baseName) donde la configuraci\u00f3n regional se origina del encabezado HTTP Accept-Language. En aplicaciones que registran expl\u00edcitamente un bean ResourceBundleMessageSource y sirven respuestas de error HTML, un atacante no autenticado puede agotar la memoria del mont\u00f3n enviando solicitudes con un gran n\u00famero de valores \u00fanicos de Accept-Language, cada uno causando una nueva entrada en el bundleCache ilimitado. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 4.10.22."}], "id": "CVE-2026-44242", "lastModified": "2026-10-26T14:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44242", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-13T14:54:21.098658Z", "version": "2.0.3"}}]}, "published": "2026-05-12T22:16:35.617", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-3rfq-4wpf-qqw3"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-3rfq-4wpf-qqw3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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