{"id":"BIT-mysql-client-2026-85748","summary":"MariaDB: Use-after-free with a large number of SYS_REFCURSOR's","details":"MariaDB server is a community developed fork of MySQL server. From 12.3.1 until 12.3.3 and 13.0.2, SYS_REFCURSOR handling is affected because cursor-array reallocation can leave stale references in routine contexts. A low-privileged attacker can open a large number of SYS_REFCURSORs and then fetch one to trigger a use-after-free that can enable remote code execution when combined with another vulnerability. This issue is fixed in versions 12.3.3 and 13.0.2.","aliases":["BIT-mariadb-2026-85748","BIT-mariadb-min-2026-85748","CVE-2026-85748","GHSA-mv8g-9f7q-hprm"],"modified":"2026-10-21T12:11:07.636969425Z","published":"2026-10-21T08:56:37.698Z","database_specific":{"cpes":["cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*"],"severity":"Critical"},"references":[{"type":"FIX","url":"https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1"},{"type":"FIX","url":"https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed"},{"type":"ARTICLE","url":"https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3"},{"type":"ARTICLE","url":"https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2"},{"type":"ADVISORY","url":"https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm"},{"type":"REPORT","url":"https://jira.mariadb.org/browse/MDEV-40396"},{"type":"REPORT","url":"https://jira.mariadb.org/browse/MDEV-40639"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85748"}],"affected":[{"package":{"name":"mysql-client","ecosystem":"Bitnami","purl":"pkg:bitnami/mysql-client"},"ranges":[{"type":"SEMVER","events":[{"introduced":"12.3.1"},{"fixed":"12.3.3"},{"introduced":"13.0.1"},{"fixed":"13.0.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/mysql-client/BIT-mysql-client-2026-85748.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}