{"id":"CVE-2026-102463","state":"PUBLISHED","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) alloc","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 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.","publishedAt":"2026-10-15T08:13:41.485Z","updatedAt":"2026-10-15T14:27:43.560Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"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","source":"eclipse"},"assigner":"eclipse","products":["Eclipse Foundation Eclipse Vert.x"],"affected":[{"vendor":"Eclipse Foundation","product":"Eclipse Vert.x","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThanOrEqual":"4.5.34","versionType":"semver"},{"version":"5.0.0","status":"affected","lessThanOrEqual":"5.0.12","versionType":"semver"},{"version":"5.1.0","status":"affected","lessThanOrEqual":"5.1.9","versionType":"semver"},{"version":"5.2.0","status":"affected","versionType":"semver"}]}],"references":["https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-xqmh-8fhj-48fp","https://gitlab.eclipse.org/security/cve-assignment/-/work_items/345"],"weaknesses":["CWE-789"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102463.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102463","state":"PUBLISHED","datePublished":"2026-10-15T08:13:41.485Z","dateUpdated":"2026-10-15T14:27:43.560Z","assignerShortName":"eclipse","assignerOrgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateReserved":"2026-09-29T08:30:04.478Z"},"containers":{"cna":{"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 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."}],"affected":[{"vendor":"Eclipse Foundation","product":"Eclipse Vert.x","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThanOrEqual":"4.5.34","versionType":"semver"},{"version":"5.0.0","status":"affected","lessThanOrEqual":"5.0.12","versionType":"semver"},{"version":"5.1.0","status":"affected","lessThanOrEqual":"5.1.9","versionType":"semver"},{"version":"5.2.0","status":"affected","versionType":"semver"}]}],"references":[{"url":"https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-xqmh-8fhj-48fp"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/345"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","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":8.2,"vectorString":"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"}}],"providerMetadata":{"shortName":"eclipse","orgId":"e51fbebd-6053-4e49-959f-1b94eeb69a2c","dateUpdated":"2026-10-15T08:13:41.485Z"},"credits":[{"lang":"en","value":"Mike Read","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T14:27:24.726424Z","id":"CVE-2026-102463","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-789","type":"CWE","lang":"en","description":"CWE-789 Memory Allocation with Excessive Size Value"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T14:27:43.560Z"}}]}}}