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CVE-2026-21936VulnerabilityPublished Updated

Red Hat Security Advisory: mysql:8.0 security update

Affects Red Hat mysql:8.0Source GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-21936· Medium 4.9

Not known to be exploited · CVSS 4.9 Medium.

Data as of 5 Nov 2026, 20:51 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationMySQL ClusterAffected
  • >=7.6.0 <=7.6.36
  • >=8.0.0 <=8.0.44
  • >=8.4.0 <=8.4.7
  • >=9.0.0 <=9.5.0
Fixed in–
Oracle CorporationMySQL ServerAffected
  • >=8.0.0 <=8.0.44
  • >=8.4.0 <=8.4.7
  • >=9.0.0 <=9.5.0
Fixed in–
Oracleoracle/mysql-clusterpkg:rpm/oracle/mysql-clusterOther threatsAffected
  • 7.6.0 – 9.0.0
4 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated MySQL 8.0 packages for Red Hat Enterprise Linux 8 to address these vulnerabilities. Users should apply the security update as described in the Red Hat advisory (RHSA-2026:5580) and follow the instructions at https://access.redhat.com/articles/11258 to remediate the issues. No additional mitigation steps are specified or required beyond applying the official update.

Description

Red Hat has issued a security advisory for MySQL 8.0 addressing multiple unspecified vulnerabilities affecting components such as the optimizer, InnoDB, DDL, and thread pooling. These vulnerabilities are rated as having a moderate security impact. The advisory provides updates for Red Hat Enterprise Linux 8 across multiple architectures. Detailed impact and CVSS scores are available on the referenced CVE pages. Users are advised to apply the provided updates to mitigate these issues.

References

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