{"id":"CVE-2026-102469","revision":null,"records":[{"revision":"8f805e604b7d49a6b5cd595ef765d81c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102469","aliases":[],"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 Vert.x DB2 client (vertx-db2-client) contains DRDA protocol handling code that deserializes User Defined Type (UDT) column data using a bar…","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 Vert.x DB2 client (vertx-db2-client) contains DRDA protocol handling code that deserializes User Defined Type (UDT) column data using a bare ObjectInputStream.readObject() call with no ObjectInputFilter or class allowlist.\n\n\n\nThis code path is triggered when a DRDA server sends a result set with a column tagged as UDT (FDOCA protocol LID 0x50). However, DB2 does not support this type of UDT. The FDOCA 0x50 type is never sent by a legitimate DB2 server.\n\n\n\nNevertheless, a malicious or man-in-the-middle DRDA server could craft a response with a 0x50-tagged column, causing the client to deserialize arbitrary attacker-controlled bytes on the Vert.x event loop before any application code can inspect or reject the data. If a Java deserialization gadget chain is present on the application's classpath, this enables remote code execution. Without a gadget chain, denial of service is possible via crafted object graphs. TLS is disabled by default, making man-in-the-middle exploitation feasible.\n\n\n\nThe impacted component is io.vertx:vertx-db2-client.","state":0,"publishedAt":"2026-10-15T08:11:33.465+00:00","modifiedAt":"2026-10-15T14:28:47.479+00:00","affected":[{"ecosystem":"Vendor product","name":"Eclipse Vert.x","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Eclipse Foundation\",\n                    \"product\": \"Eclipse Vert.x\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.0.0\",\n                            \"lessThanOrEqual\": \"4.5.34\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0\",\n                            \"lessThanOrEqual\": \"5.0.12\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.1.0\",\n                            \"lessThanOrEqual\": \"5.1.9\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.2.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.2,"severity":"CRITICAL"}],"references":["https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-j4vf-w939-pgxf","https://gitlab.eclipse.org/security/cve-assignment/-/work_items/347"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102469","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102469","identifiers":["CVE-2026-102469"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T17:05:03.6461191+00:00","complete":true,"records":1772,"lastAttemptAt":"2026-11-09T17:05:03.6461191+00:00","lastSuccessAt":"2026-11-09T17:05:03.8531145+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.853115+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-c9cdfc1581e828ba6edad094382347f5c5591d8ad29e4b235259cf3365c4cd4f","complete":true,"records":421470,"lastAttemptAt":"2026-11-09T17:02:16.1896721+00:00","lastSuccessAt":"2026-11-09T17:02:15.8609908+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:02:16.1896721+00:00","snapshotPublishedAt":"2026-11-09T16:22:58+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-603f16837a0b41959a5a4e1f45df3227","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T17:14:06.934189+00:00","lastSuccessAt":"2026-11-09T17:14:07.130942+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:14:07.130942+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T17:05:03.6461191+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T17:05:03.6461191+00:00","lastSuccessAt":"2026-11-09T17:05:03.8539711+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.8539712+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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