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CVE-2026-44242

3.7 · LOW

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications.

Published May 12, 2026CWE-400EPSS 0.33%

Overview

CVE-2026-44242 is a low-severity vulnerability. It was published on May 12, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/micronaut-projects/micronaut-core/security/advisories/GHSA-3rfq-4wpf-qqw3GitHubgithub.com/micronaut-projects/micronaut-core/security/advisories/GHSA-3rfq-4wpf-qqw3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-44242?

CVE-2026-44242 is a low-severity vulnerability. It was published on May 12, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2026-44242?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-44242?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-44242?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-44242 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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