{"id":"CVE-2026-102463","title":"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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimen…","summary":"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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimen…","severity":"high","cvss":8.2,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","vendor":"Eclipse Foundation","product":"Eclipse Vert.x","affected":["eclipse_vert.x >= 4.0.0 <= 4.5.34","eclipse_vert.x >= 5.0.0 <= 5.0.12","eclipse_vert.x >= 5.1.0 <= 5.1.9","eclipse_vert.x 5.2.0"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T09:17:15.143","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102463","references":[{"url":"https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-xqmh-8fhj-48fp","label":"emo@eclipse.org"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/345","label":"emo@eclipse.org"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-15T08:58:33.102Z","slug":"CVE-2026-102463","body":"## Overview\n\nIn 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 binary array decoder in vertx-pg-client (DataTypeCodec.binaryDecodeArray) allocates a Java array sized by a server-declared 32-bit dimension count with no upper bound. A malicious or compromised PostgreSQL server, or an on-path attacker intercepting an unencrypted connection, can send a crafted DataRow message with an excessively large array dimension value, causing the client to attempt a multi-gigabyte heap allocation and crash with an OutOfMemoryError.\n\n\n\nThe impacted component is io.vertx:vertx-pg-client.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}