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CVE-2026-102461

8.7 high SSVC exploitation: none Analyzed
NVD · CVE.org

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

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 6

  1. Cpes+2 CPE criteria (now 2)NVD modified 2026-10-20 19:29
  2. StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-20 19:29
  3. CwesCWE-407NVD modified 2026-10-16 19:17
  4. StatusAwaiting Analysis → Undergoing AnalysisNVD modified 2026-10-16 19:17
  5. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 14:41
  6. First seenCVSS 8.7NVD modified 2026-10-15 09:17

Affected (CPE criteria) 2

  • cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
  • cpe:2.3:a:eclipse:vert.x:5.2.0:*:*:*:*:*:*:*

References 2