The impacted component is io.vertx:vertx-mysql-client.
Project Subscriptions
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Solution
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Workaround
No workaround given by the vendor.
Thu, 15 Oct 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-789 | |
| Metrics |
ssvc
|
Thu, 15 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x MySQL client (vertx-mysql-client) pre-allocates an array for column definitions based on a server-declared column count with no upper-bound validation. A malicious or compromised MySQL server, or an attacker with man-in-the-middle positioning, can send a crafted result set packet with an extremely large column count, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Netty event loop thread, causing a complete denial of service for all connections and verticles in the Vert.x application. The impacted component is io.vertx:vertx-mysql-client. | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: eclipse
Published:
Updated: 2026-10-15T14:24:55.316Z
Reserved: 2026-09-29T08:30:09.941Z
Link: CVE-2026-102466
Updated: 2026-10-15T14:24:06.663Z
Status : Awaiting Analysis
Published: 2026-10-15T09:17:15.427
Modified: 2026-10-15T15:17:19.190
Link: CVE-2026-102466
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OpenCVE Enrichment
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