What’s Vulnerable › Vulnerabilities

CVE-2024-8391: Eclipse Vert.x gRPC server does not limit the maximum message size

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-09-04 · updated 2026-06-17
• Weakness: CWE-770

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)

Affected products

• Eclipse Foundation Eclipse Vert.x: from 4.3.0 before 4.5.10 — fixed in 4.5.10

How to fix

Upgrade to a fixed version: Eclipse Foundation Eclipse Vert.x 4.5.10. Check the vendor advisory for mitigations.

References

• https://github.com/eclipse-vertx/vertx-grpc/issues/113
• https://gitlab.eclipse.org/security/cve-assignement/-/issues/31

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