{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102461","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","state":"PUBLISHED","assignerShortName":"eclipse","dateReserved":"2026-09-29T08:25:01.312Z","datePublished":"2026-10-15T08:23:54.256Z","dateUpdated":"2026-10-16T18:40:19.187Z"},"containers":{"cna":{"providerMetadata":{"orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","shortName":"eclipse","dateUpdated":"2026-10-15T08:23:54.256Z"},"affected":[{"vendor":"Eclipse Foundation","product":"Eclipse Vert.x","versions":[{"status":"affected","version":"4.0.0","lessThanOrEqual":"4.5.34","versionType":"semver"},{"status":"affected","version":"5.0.0","lessThanOrEqual":"5.0.12","versionType":"semver"},{"status":"affected","version":"5.1.0","lessThanOrEqual":"5.1.9","versionType":"semver"},{"status":"affected","version":"5.2.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.\n\n\n\nThe impacted component is io.vertx:vertx-json-schema.\n\n\n\nThe following Vert.x modules depend on vertx-json-schema and are also affected:\n\n\n\nio.vertx:vertx-web-openapi-router io.vertx:vertx-web-validation io.vertx:vertx-openapi","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p><p>The impacted component is io.vertx:vertx-json-schema.</p><p>The following Vert.x modules depend on vertx-json-schema and are also affected:</p><p>io.vertx:vertx-web-openapi-router io.vertx:vertx-web-validation io.vertx:vertx-openapi</p>"}]}],"references":[{"url":"https://github.com/eclipse-vertx/vertx-json-schema/security/advisories/GHSA-4m87-8qfr-8p8m"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/340"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"credits":[{"lang":"en","value":"Mike Read","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-407","lang":"en","description":"CWE-407 Inefficient Algorithmic Complexity"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T18:37:10.870874Z","id":"CVE-2026-102461","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-16T18:40:19.187Z"}}]}}