CVE WatchOct 16, 2026

CVE-2026-102461

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

CVSS

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No CVSS

EPSS

0.4%

p33

KEV

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Exploit Today

0-100

Published: Oct 15, 2026 · Last modified: Oct 16, 2026 · CWE-407

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-10-152026-10-16

Technical 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

Official references

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