How severe is CVE-2026-33012?

CVE-2026-33012 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-2026-33012 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33012?

CVE-2026-33012 affects Objectcomputing Micronaut. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33012?

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-2026-33012 have an EU (EUVD) identifier?

Yes. CVE-2026-33012 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13551.

When was CVE-2026-33012 published?

CVE-2026-33012 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-33012

CVE-2026-33012 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13551
Weakness: CWE-770
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 4.7.0 through 4.10.16 used an unbounded ConcurrentHashMap cache with no eviction policy in its DefaultHtmlErrorResponseBodyProvider. If the application throws an exception whose message may be influenced by an attacker, (for example, including request query value parameters) it could be used by remote attackers to cause an unbounded heap growth and OutOfMemoryError, leading to DoS. This issue has been fixed in version 4.10.7.

Frequently asked questions

What is CVE-2026-33012?: Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Versions 4.7.0 through 4.10.16 used an unbounded ConcurrentHashMap cache with no eviction policy in its DefaultHtmlErrorResponseBodyProvider. If the application throws an exception whose message may be influenced by an attacker, (for example, including request query value parameters) it could be used by remote attackers to cause an unbounded heap growth and OutOfMemoryError, leading to DoS. This issue has been fixed in version 4.10.7.
How severe is CVE-2026-33012?: CVE-2026-33012 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-2026-33012 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33012?: CVE-2026-33012 affects Objectcomputing Micronaut. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33012?: 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-2026-33012 have an EU (EUVD) identifier?: Yes. CVE-2026-33012 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13551.
When was CVE-2026-33012 published?: CVE-2026-33012 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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