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Fencer Vulns
high 7.5

CVE-2026-46863 json

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling).

published 2026-06-16 4 mo ago modified 2026-06-18 4 mo ago also EUVD-2026-37356

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Patch / fix

  • oracle mysql 8.4.10, 9.7.1
  • oracle mysql_server 8.4.10, 9.7.1
  • oracle mysql_cluster 8.4.10, 9.7.1
  • oracle mysql_ndb_cluster 8.4.10, 9.7.1
  • mysql-8.0 Ubuntu 22.04 LTS 8.0.46-0ubuntu0.22.04.3
  • mysql-8.0 Ubuntu 24.04 LTS 8.0.46-0ubuntu0.24.04.3
  • mysql-8.4 Ubuntu 25.10 8.4.10-0ubuntu0.25.10.1
  • mysql-8.4 Ubuntu 26.04 LTS 8.4.10-0ubuntu0.26.04.1
  • mysql-8.0 Ubuntu Pro 20.04 LTS 8.0.46-0ubuntu0.20.04.1+esm3

ubuntu advisories UBUNTU-CVE-2026-46863

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Oracle Corporation MySQL Server
  • Oracle Corporation MySQL Cluster

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.