CVE-2026-21948 Affecting mysql-test-data package, versions <0:8.4.8-1.module+el8.10.0+90860+a2709779


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ORACLE8-MYSQLTESTDATA-15953335
  • published9 Apr 2026
  • disclosed20 Jan 2026

Introduced: 20 Jan 2026

CVE-2026-21948  (opens in a new tab)

How to fix?

Upgrade Oracle:8 mysql-test-data to version 0:8.4.8-1.module+el8.10.0+90860+a2709779 or higher.
This issue was patched in ELSA-2026-6391.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mysql-test-data package and not the mysql-test-data package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS Base Scores

version 3.1