High severityNVD Advisory· Published Oct 15, 2026
CVE-2026-102461
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
Affected products
3- Range: >=4.0.0,<4.5.34 or >=5.0.0,<5.0.12 or >=5.1.0,<5.1.9 or =5.2.0
- Range: >=4.0.0,<4.5.34 or >=5.0.0,<5.0.12 or >=5.1.0,<5.1.9 or =5.2.0
- Range: >=4.0.0,<4.5.34 or >=5.0.0,<5.0.12 or >=5.1.0,<5.1.9 or =5.2.0
Patches
Vulnerability mechanics
References
2News mentions
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