{"id":"CVE-2026-102465","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 Vert.x Redis client RESP parser pre-allocates arrays to a length declared by the server without enforcing an upper bound. A malicious or compromised Redis server, or an attacker in a man-in-the-middle position, can send a crafted RESP response declaring an extremely large array, push, or attribute length, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Vert.x event loop thread, denying service to all connections and verticles sharing that loop.\n\n\n\nThe impacted component is io.vertx:vertx-mysql-client.","aliases":["GHSA-4wf9-p5hg-98w5"],"modified":"2026-10-17T02:47:50.268854168Z","published":"2026-10-15T07:27:55.055Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102465.json","cna_assigner":"eclipse"},"references":[{"type":"WEB","url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102465.json"},{"type":"ADVISORY","url":"https://github.com/vert-x3/vertx-redis-client/security/advisories/GHSA-4wf9-p5hg-98w5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102465"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vert-x3/vertx-redis-client","events":[{"introduced":"ec18f32d04a29a396cb40d285ed5999339ed098f"},{"last_affected":"ef864ffd290001ac491ef903cdf7699c78f239bd"},{"introduced":"252e182e034dbfe6cd19dee39cf2cd2800b2c0ec"},{"last_affected":"ff5af262f2259fa6d51414f7dc5b9c6fbfa6cb26"},{"introduced":"bd79244a69bb1b9d3fd8b11fc6ccb6b2759790e2"},{"last_affected":"49ea0e302ed3a9fc0d19d1252c8c769c2d1df4d0"},{"introduced":"5ed71d30e497d7c8df733f9833cca56378c0c9f8"},{"last_affected":"5ed71d30e497d7c8df733f9833cca56378c0c9f8"}],"database_specific":{"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"}],"source":"AFFECTED_FIELD"}}],"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","4.2.3","4.2.2","4.2.1","4.2.0","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-2026-102465.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}