{"answers":{"affected":"6 open source packages ship an affected version, including io.micronaut:micronaut-context.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44241 exists.","fix":"Upgrade io.micronaut:micronaut-context to a fixed version for your release line: 3.8.14, 3.10.6 or 4.10.22.","what":"CVE-2026-44241 is a high-severity denial of service vulnerability in micronaut-projects micronaut-core, published on 12 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-44241 and fix it if it is affected.\n\nWhat it is: CVE-2026-44241 is a high-severity denial of service vulnerability in micronaut-projects micronaut-core, published on 12 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44241 exists.\n\nAffected packages and fixed versions:\n- io.micronaut:micronaut-context (Maven): affected all versions; fixed in 3.8.14\n- io.micronaut:micronaut-context (Maven): affected all versions; fixed in 3.8.14\n- io.micronaut:micronaut-context (Maven): affected from 3.10.0; fixed in 3.10.6\n- io.micronaut:micronaut-context (Maven): affected from 3.10.0; fixed in 3.10.6\n- io.micronaut:micronaut-context (Maven): affected from 4.3.0; fixed in 4.10.22\n- io.micronaut:micronaut-context (Maven): affected from 4.3.0; fixed in 4.10.22\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-44241/ (Markdown: https://insights.sbomify.com/CVE-2026-44241/index.md)","id":"CVE-2026-44241","markdown":"https://insights.sbomify.com/CVE-2026-44241/index.md","name":"CVE-2026-44241","record":{"aliases":["CLEANSTART-2026-VZ67259","ECHO-7c8b-c5a6-558d","GHSA-8hjv-92q9-g4xj"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Java web framework","requires_auth":"none","summary":"An unauthenticated attacker can exhaust JVM heap memory by sending requests with unique Accept-Language headers, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"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\u003cString, DateTimeFormatter\u003e 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.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Micronaut has unbounded `formattersCache` in `TimeConverterRegistrar` that Allows Memory Exhaustion via `Accept-Language` Header","id":"CVE-2026-44241","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":7,"next":{"headline":"Micronaut has Unbounded `bundleCache` in `ResourceBundleMessageSource` that Allows Memory Exhaustion via `Accept-Language` Header","id":"CVE-2026-44242"},"packages":[{"ecosystem":"Maven","fixed":["3.8.14"],"introduced":["0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":null,"source":"GHSA-8hjv-92q9-g4xj"},{"ecosystem":"Maven","fixed":["3.8.14"],"introduced":["0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":"pkg:maven/io.micronaut/micronaut-context","source":"GHSA-8hjv-92q9-g4xj"},{"ecosystem":"Maven","fixed":["3.10.6"],"introduced":["3.10.0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":null,"source":"GHSA-8hjv-92q9-g4xj"},{"ecosystem":"Maven","fixed":["3.10.6"],"introduced":["3.10.0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":"pkg:maven/io.micronaut/micronaut-context","source":"GHSA-8hjv-92q9-g4xj"},{"ecosystem":"Maven","fixed":["4.10.22"],"introduced":["4.3.0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":null,"source":"GHSA-8hjv-92q9-g4xj"},{"ecosystem":"Maven","fixed":["4.10.22"],"introduced":["4.3.0"],"last_affected":[],"package":"io.micronaut:micronaut-context","purl":"pkg:maven/io.micronaut/micronaut-context","source":"GHSA-8hjv-92q9-g4xj"}],"prev":{"headline":"basic-ftp allows a malicious FTP server to cause client-side denial of service via unbounded multiline control response buffering","id":"CVE-2026-44240"},"products":["micronaut-core"],"published":"2026-05-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-10","vendors":["micronaut-projects"]},"summary":"An unauthenticated attacker can exhaust JVM heap memory by sending requests with unique Accept-Language headers, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-44241/"}