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CVE

CVE-2026-33013

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

CVE-2026-33013

Micronaut vulnerable to DoS via crafted form-urlencoded body binding with descending array indices

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.2
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Related Resources

No items found.

References

https://github.com/micronaut-projects/micronaut-core/releases/tag/v3.10.5, https://github.com/micronaut-projects/micronaut-core/releases/tag/v4.10.16, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33013.json, https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-43w5-mmxv-cpvh, https://nvd.nist.gov/vuln/detail/CVE-2026-33013, https://github.com/micronaut-projects/micronaut-core/commit/1afe509677c51b320041b7a2c177366d4a4deb55, https://github.com/micronaut-projects/micronaut-core/pull/12410

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00595%
EPSS Percentile
0.43576%
Introduced Version
0
Fix Available
1afe509677c51b320041b7a2c177366d4a4deb55,df467a445d6bc1951261f8176d16e2fdb7664a73,ce658f16c2aee3b1ceddcc50d0e10bdcbb9177ff

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