High severityNVD Advisory· Published Mar 20, 2026· Updated Mar 20, 2026
Micronaut Framework vulnerable to a Denial of Service in HTML error response caching
CVE-2026-33012
Description
Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions 4.7.0 through 4.10.16 used an unbounded ConcurrentHashMap cache with no eviction policy in its DefaultHtmlErrorResponseBodyProvider. If the application throws an exception whose message may be influenced by an attacker, (for example, including request query value parameters) it could be used by remote attackers to cause an unbounded heap growth and OutOfMemoryError, leading to DoS. This issue has been fixed in version 4.10.7.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
io.micronaut:micronaut-http-serverMaven | >= 4.7.0, < 4.10.17 | 4.10.17 |
Affected products
2- Range: >= 4.7.0, < 4.10.17
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-2hcp-gjrf-7fhcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33012ghsaADVISORY
- github.com/micronaut-projects/micronaut-core/commit/1e2ba2c14386af3d47751732d02053a72b0b49b3ghsax_refsource_MISCWEB
- github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.17ghsax_refsource_MISCWEB
- github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-2hcp-gjrf-7fhcghsax_refsource_CONFIRMWEB
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