Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions prior to both 4.10.16 and 3.10.5 do not correctly handle descending array index order during form-urlencoded body binding in theJsonBeanPropertyBinder::expandArrayToThreshold, which allows remote attackers to cause a DoS (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., authors[1].name followed by authors[0].name). This issue has been fixed in versions 4.10.16 and 3.10.5.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Micronaut-projects
  • Micronaut-core

No data.

No data.

References
Link Providers
https://www.spirityenterprise.com/managed-detection-response spirity
https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55 cve-icon cve-icon cve-icon
https://github.com/micronaut-projects/micronaut-core/pull/12410 cve-icon cve-icon cve-icon
https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5 cve-icon cve-icon cve-icon
https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16 cve-icon cve-icon cve-icon
https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33013 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33013 cve-icon
History

Fri, 20 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1285
References
Metrics threat_severity

None

 cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Fri, 20 Mar 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Micronaut-projects
Micronaut-projects micronaut-core
Vendors & Products Micronaut-projects
Micronaut-projects micronaut-core

Fri, 20 Mar 2026 05:15:00 +0000

Type Values Removed Values Added
Description Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions prior to both 4.10.16 and 3.10.5 do not correctly handle descending array index order during form-urlencoded body binding in theJsonBeanPropertyBinder::expandArrayToThreshold, which allows remote attackers to cause a DoS (non-terminating loop, CPU exhaustion, and OutOfMemoryError) via crafted indexed form parameters (e.g., authors[1].name followed by authors[0].name). This issue has been fixed in versions 4.10.16 and 3.10.5.
Title Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices
Weaknesses CWE-835
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-20T04:47:42.768Z

Reserved: 2026-03-17T17:22:14.665Z

Link: CVE-2026-33013

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-20T05:16:15.380

Modified: 2026-03-20T05:16:15.380

Link: CVE-2026-33013

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-20T04:47:42Z

Links: CVE-2026-33013 - Bugzilla