CVE-2026-102461
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 uniqueItems keyword validation uses an O(n²) pairwise comparison loop with no short-circuit or size limit. A remote unauthenticated attacker can submit a moderately-sized JSON array that consumes disproportionate CPU time, leading to denial of service. The impacted component is io.vertx:vertx-json-schema. The following Vert.x modules depend on vertx-json-schema and are also affected: io.vertx:vertx-web-openapi-router io.vertx:vertx-web-validation io.vertx:vertx-openapi
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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