How severe is CVE-2024-8391?

CVE-2024-8391 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-2024-8391 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-2024-8391?

CVE-2024-8391 affects Eclipse Vert.x. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8391?

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-2024-8391 have an EU (EUVD) identifier?

Yes. CVE-2024-8391 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2795.

When was CVE-2024-8391 published?

CVE-2024-8391 was published on 2024-09-04 and last updated on 2026-06-17.

CVE-2024-8391

CVE-2024-8391 is a high-severity vulnerability in Eclipse Vert.x 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)
CVSS v4: 6.9
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2795
Weakness: CWE-770
Affected product: Eclipse Vert.x
Published: 2024-09-04
Last modified: 2026-06-17

Description

In Eclipse Vert.x version 4.3.0 to 4.5.9, the gRPC server does not limit the maximum length of message payload (Maven GAV: io.vertx:vertx-grpc-server and io.vertx:vertx-grpc-client). This is fixed in the 4.5.10 version. Note this does not affect the Vert.x gRPC server based grpc-java and Netty libraries (Maven GAV: io.vertx:vertx-grpc)

Frequently asked questions

What is CVE-2024-8391?: In Eclipse Vert.x version 4.3.0 to 4.5.9, the gRPC server does not limit the maximum length of message payload (Maven GAV: io.vertx:vertx-grpc-server and io.vertx:vertx-grpc-client). This is fixed in the 4.5.10 version. Note this does not affect the Vert.x gRPC server based grpc-java and Netty libraries (Maven GAV: io.vertx:vertx-grpc)
How severe is CVE-2024-8391?: CVE-2024-8391 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-2024-8391 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-2024-8391?: CVE-2024-8391 affects Eclipse Vert.x. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8391?: 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-2024-8391 have an EU (EUVD) identifier?: Yes. CVE-2024-8391 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2795.
When was CVE-2024-8391 published?: CVE-2024-8391 was published on 2024-09-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*

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