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CVE-2026-33013— Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices

Quick assessment

Affected
micronaut-projects micronaut-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Micronaut Framework是Micronaut基金会的一个基于 JVM 的现代全栈 Java 框架。 Micronaut Framework 4.10.16之前版本和3.10.5之前版本存在安全漏洞，该漏洞源于处理降序数组索引时存在非终止循环，可能导致CPU耗尽和拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 0.78% · P54

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-33013

Vulnerability Information
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Vulnerability Title
Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
Micronaut Framework 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Micronaut Framework是Micronaut基金会的一个基于 JVM 的现代全栈 Java 框架。 Micronaut Framework 4.10.16之前版本和3.10.5之前版本存在安全漏洞，该漏洞源于处理降序数组索引时存在非终止循环，可能导致CPU耗尽和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
micronaut-projects micronaut-core >= 4.0.0-M1, < 4.10.16 -

II. Public POCs for CVE-2026-33013

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III. Intelligence Information for CVE-2026-33013

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Patches & Fixes for CVE-2026-33013 (2)

Vendor Advisories for CVE-2026-33013 (1)

Vendor Pages for CVE-2026-33013 (2)

IV. Related Vulnerabilities

Same product: micronaut-core
Same vendor: micronaut-projects
Same weakness: CWE-835

V. Comments for CVE-2026-33013

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