Resource exhaustion in Micronaut-Projects Micronaut-Core
CVE-2026-33012
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.
EPSS: 0.006 (44.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Micronaut-projects Micronaut-core — versions >= 4.7.0, < 4.10.17
- Objectcomputing Micronaut
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-33012?
- CVE-2026-33012 is a high-severity vulnerability in Micronaut-Projects Micronaut-Core, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-20.
- How severe is CVE-2026-33012?
- High severity. CVSS v3 base score is 7.5 out of 10.