MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
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.
CVE-2026-85748
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-85748
server
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "MariaDB",
"product": "server",
"versions": [
{
"status": "affected",
"version": ">= 12.3.1, < 12.3.3"
},
{
"status": "affected",
"version": ">= 13.0.1, < 13.0.2"
}
]
}
]- Related CVEs
- CVE-2026-85748
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #32758 · Revision 1
- Added to Heist Feed
- Publisher date