{"id":"CVE-2026-102461","details":"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","aliases":["GHSA-4m87-8qfr-8p8m"],"modified":"2026-10-17T02:47:50.438932645Z","published":"2026-10-15T08:23:54.256Z","database_specific":{"cna_assigner":"eclipse","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102461.json"},"references":[{"type":"WEB","url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/340"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102461.json"},{"type":"ADVISORY","url":"https://github.com/eclipse-vertx/vertx-json-schema/security/advisories/GHSA-4m87-8qfr-8p8m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102461"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse-vertx/vertx-json-schema","events":[{"introduced":"fcf4f410042fef02c397f446c9c703a421cc21d9"},{"last_affected":"c37b914c9950d9d491475925579ca58d662ffee9"},{"introduced":"17a7c085ebd9f494c1a5d42b46b43676528d48ea"},{"last_affected":"c11fb6a120811b96348861b9397850b4ac4e1ca1"},{"introduced":"41fcf902bcc77021e0e9aeb3438cb3765c3c2ff2"},{"last_affected":"19c6f28903062f0b0b39d7b42438e3b629614195"},{"introduced":"51656be5a0d9b854b0baf7e9cef54a78711e16cf"},{"last_affected":"51656be5a0d9b854b0baf7e9cef54a78711e16cf"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"4.0.0"},{"last_affected":"4.5.34"},{"introduced":"5.0.0"},{"last_affected":"5.0.12"},{"introduced":"5.1.0"},{"last_affected":"5.1.9"},{"introduced":"5.2.0"},{"last_affected":"5.2.0"}]}}],"versions":["5.2.0","4.5.34","4.5.33","4.5.32","4.5.31","4.5.30","4.5.29","4.5.28","4.5.27","5.0.12","5.0.11","5.0.10","4.5.26","5.0.9","5.0.8","4.5.25","4.5.24","5.0.7","5.0.6","4.5.23","5.0.5","4.5.22","5.0.4","4.5.21","4.5.20","4.5.19","5.0.3","4.5.18","4.5.17","5.0.2","5.0.1","4.5.16","4.5.15","5.0.0","4.5.14","4.5.13","4.5.12","4.5.11","4.5.10","4.5.9","4.5.8","4.5.7","4.5.6","4.5.5","4.5.4","4.5.3","4.5.2","4.5.1","4.5.0","4.4.5","4.4.4","4.4.3","4.4.2","4.4.1","4.4.0","4.3.5","4.3.4","4.3.3","4.3.2","4.3.1","4.3.0","4.2.5","4.2.4","4.2.3","4.2.2","4.2.1","4.2.0","4.2.0.CR1","4.2.0.Beta1","4.1.1","4.1.0","4.1.0.CR2","4.1.0.CR1","4.1.0.Beta1","4.0.3","4.0.2","4.0.1","4.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102461.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}