Vulnerability details
CVE-2026-33013
micronaut-projects micronaut-core
Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices
CVSS 4.0
8.2High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.2High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| micronaut-projects | micronaut-core | < 3.10.5 | CVEProject cvelistV5 (CNA) |
| micronaut-projects | micronaut-core | >= 4.0.0-M1, < 4.10.16 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh x_refsource_CONFIRM
- https://github.com/micronaut-projects/micronaut-core/pull/12410 x_refsource_MISC
- https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55 x_refsource_MISC
- https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5 x_refsource_MISC
- https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16 x_refsource_MISC
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Details
- Published
- 2026-03-20
- Last updated
- 2026-03-25
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.61%
Probability of exploitation in 30 days
49.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')