CVE-2026-44242
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.
- CVSS 3.1
- 3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3rfq-4wpf-qqw3 | Maven | io.micronaut:micronaut-inject | >=4.10.0 <4.10.22 | 4.10.22 |
| GHSA-3rfq-4wpf-qqw3 | Maven | io.micronaut:micronaut-inject | >=3.10.0 <3.10.6 | 3.10.6 |
| GHSA-3rfq-4wpf-qqw3 | Maven | io.micronaut:micronaut-inject | <3.8.14 | 3.8.14 |