CVE-2026-21952

CWE-400 — Uncontrolled Resource Consumption8 documents8 sources
Severity
4.9MEDIUM
EPSS
0.0%
top 84.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Oracle Corporation Mysql ServerOracle Mysql Server
Timeline
PublishedJan 20
Latest updateJan 21

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 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…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HExploitability: 1.2 | Impact: 3.6

Affected Packages2 packages

▶NVDoracle/mysql_server9.0.0 — 9.5.0
▶CVEListV5oracle_corporation/mysql_server9.0.0 — 9.5.0

🔴Vulnerability Details

3
GHSA
GHSA-r3xh-936h-7hqm: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser)↗2026-01-21
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OSV
CVE-2026-21952: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser)↗2026-01-20
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CVEList
CVE-2026-21952: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser)↗2026-01-20
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📋Vendor Advisories

3
Red Hat
mysql: Parser unspecified vulnerability (CPU Jan 2026)↗2026-01-20
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Oracle
Oracle Oracle MySQL Risk Matrix: Server: Parser — CVE-2026-21952↗2026-01-15
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Debian
CVE-2026-21952: mysql-8.0 - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Pa...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-21952 Impact, Exploitability, and Mitigation Steps | Wiz↗
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