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VulnerabilityPublished

CVE-2026-22017: Oracle MySQL Server · Uncontrolled Resource Consumption

Affects Oracle MySQL ServerSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  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), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationMySQL ServerAffected
  • >=8.0.0 <=8.0.45
  • >=8.4.0 <=8.4.8
  • >=9.0.0 <=9.6.0
Fixed in–
Mysqlmysql/mysql-serverpkg:deb/mysql/mysql-serverOther threatsAffected
  • =8.0.0
  • =8.4.0
  • =9.0.0
Fixed in–

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

AI-suggested

Oracle has released security patches for this vulnerability as part of the April 2026 Critical Patch Update. Users of affected MySQL Server versions (8.0.0-8.0.45, 8.4.0-8.4.8, 9.0.0-9.6.0) should apply the relevant patches promptly. Oracle strongly advises customers to remain on actively-supported versions and to apply Critical Patch Updates without delay. Patch status is confirmed by the vendor advisory at https://www.oracle.com/security-alerts/cpuapr2026.html. No alternative mitigations or workarounds are specified by Oracle.

Description

CVE-2026-22017 is a vulnerability in Oracle MySQL Server affecting versions 8.0.0 through 8.0.45, 8.4.0 through 8.4.8, and 9.0.

References

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