CVE-2026-102461

Name of the Vulnerable Software and Affected Versions Eclipse Vert.x versions 4.0.0 through 4.5.34 Eclipse Vert.x versions 5.0.0 through 5.0.12 Eclipse Vert.x versions 5.1.0 through 5.1.9 Eclipse Vert.x version 5.2.0

Description The io.vertx:vertx-json-schema component, along with dependent modules io.vertx:vertx-web-openapi-router, io.vertx:vertx-web-validation, and io.vertx:vertx-openapi, contains an issue where the uniqueItems keyword validation employs an O(n²) pairwise comparison loop. This process lacks a short-circuit mechanism or size limit, allowing a remote unauthenticated attacker to submit a moderately-sized JSON array that consumes excessive CPU resources, resulting in a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.