How severe is CVE-2026-33013?

CVE-2026-33013 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-33013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33013?

CVE-2026-33013 affects Objectcomputing Micronaut. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33013?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33013 have an EU (EUVD) identifier?

Yes. CVE-2026-33013 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13553.

When was CVE-2026-33013 published?

CVE-2026-33013 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-33013

CVE-2026-33013 is a high-severity vulnerability in Objectcomputing Micronaut with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.2
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13553
Weakness: CWE-835
Affected product: Objectcomputing Micronaut
Published: 2026-03-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33013?: 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.
How severe is CVE-2026-33013?: CVE-2026-33013 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-33013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33013?: CVE-2026-33013 affects Objectcomputing Micronaut. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33013?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33013 have an EU (EUVD) identifier?: Yes. CVE-2026-33013 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13553.
When was CVE-2026-33013 published?: CVE-2026-33013 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:objectcomputing:micronaut:*:*:*:*:*:*:*:*

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