CVE-2026-102462
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 TDS message decoder in the Vert.x MSSQL client (vertx-mssql-client) aggregates inbound TDS packets into a composite direct-memory buffer without any cumulative size limit. A malicious, compromised, or man-in-the-middle SQL Server can send a continuous stream of TDS packets without setting the END_OF_MESSAGE status flag, causing unbounded direct-memory allocation on the client and leading to an out-of-memory crash. This occurs before authentication completes. The impacted component is io.vertx:vertx-mssql-client.
How to fix
- eclipse vert.x4.5.35, 5.1.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| eclipse vert.x | 4.5.0 ≤ v < 4.5.35, 5.0.0 ≤ v < 5.1.10, 5.2.0 | 4.5.35, 5.1.10 |
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Attack Surface Management
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