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Description

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.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-12 | Updated 2026-05-13 | Assigner GitHub_M




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-400: Uncontrolled Resource Consumption

Product status

< 4.10.22
affected

References

github.com/...t-core/security/advisories/GHSA-3rfq-4wpf-qqw3 exploit

github.com/...t-core/security/advisories/GHSA-3rfq-4wpf-qqw3

cve.org (CVE-2026-44242)

nvd.nist.gov (CVE-2026-44242)

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