CVE-2026-33012 HIGH

CVE-2026-33012: Micronaut Framework vulnerable to a Denial of Service in HTML error response caching

Vendor Micronaut-Projects
Product micronaut-core
Weakness CWE-770 · Uncontrolled resource consumption
Published March 20, 2026
Last update March 20, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 20, 2026 CVE published
March 20, 2026 Record updated