CVE-2026-44241
- Source
- https://cve.org/CVERecord?id=CVE-2026-44241
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44241.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-44241
- Aliases
- Published
- 2026-05-12T21:20:45.249Z
- Modified
- 2026-07-11T04:04:05.760951258Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Micronaut Framework: Unbounded formattersCache in TimeConverterRegistrar Allows Memory Exhaustion via Accept-Language Header
- Details
-
Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. From 4.3.0 to before 4.10.22, 3.10.6, and 3.8.14, TimeConverterRegistrar caches DateTimeFormatter instances in an unbounded ConcurrentHashMap<String, DateTimeFormatter> whose key is derived from the @Format annotation pattern concatenated with the locale from the HTTP Accept-Language header. Because Locale.forLanguageTag() accepts arbitrary BCP 47 private-use extensions (en-x-a001, en-x-a002, …), an unauthenticated attacker can generate an unlimited number of unique cache keys by sending requests with novel locale tags, growing the cache until heap memory is exhausted and the JVM crashes. This vulnerability is fixed in 4.10.22, 3.10.6, and 3.8.14.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-400" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44241.json" }- References
-
- https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.6
- https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.8.14
- https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.22
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44241.json
- https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-8hjv-92q9-g4xj
- https://nvd.nist.gov/vuln/detail/CVE-2026-44241
- https://github.com/micronaut-projects/micronaut-core/commit/48f05ae8dc4157816fe0050c5cf730be7d44f8b3
- https://github.com/micronaut-projects/micronaut-core/commit/c2048ab740c2efdfe227813f203176e0ef93f892
- https://github.com/micronaut-projects/micronaut-core/commit/c6ca8782de7338732e887d090f38c9e941bcb284
Affected packages
Git / github.com/micronaut-projects/micronaut-core
Affected ranges
- Type
- GIT
- Repo
- https://github.com/micronaut-projects/micronaut-core
- Events
-
IntroducedFixedIntroducedFixedIntroduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "extracted_events": [ { "introduced": "4.3.0" }, { "fixed": "4.10.22" }, { "introduced": "3.10.0" }, { "fixed": "3.10.6" }, { "introduced": "0" }, { "fixed": "3.8.14" } ], "source": "AFFECTED_FIELD" }