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CVE-2026-34271

CVE-2026-34271

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication Plugin). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 6.5 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system · database

Affected products and versions

  • mysql

    Versions
    • ≥ 8.0.0, ≤ 8.0.45: Affected (custom)
    • ≥ 8.4.0, ≤ 8.4.8: Affected (custom)
    • ≥ 9.0.0, ≤ 9.6.0: Affected (custom)

    No fix published

  • mysql-5.5 Ubuntu:14.04:LTS

    Versions
    • 5.5.32-0ubuntu7
    • 5.5.34-0ubuntu1
    • 5.5.34-0ubuntu2
    • 5.5.35-0ubuntu1
    • 5.5.35+dfsg-1ubuntu1
    • 5.5.37-0ubuntu0.14.04.1
    • 5.5.38-0ubuntu0.14.04.1
    • 5.5.40-0ubuntu0.14.04.1
    • 5.5.41-0ubuntu0.14.04.1
    • 5.5.43-0ubuntu0.14.04.1
    • 5.5.44-0ubuntu0.14.04.1
    • 5.5.46-0ubuntu0.14.04.2
    • 5.5.47-0ubuntu0.14.04.1
    • 5.5.49-0ubuntu0.14.04.1
    • 5.5.50-0ubuntu0.14.04.1
    • 5.5.52-0ubuntu0.14.04.1
    • 5.5.53-0ubuntu0.14.04.1
    • 5.5.54-0ubuntu0.14.04.1
    • 5.5.55-0ubuntu0.14.04.1
    • 5.5.57-0ubuntu0.14.04.1
    • 5.5.58-0ubuntu0.14.04.1
    • 5.5.59-0ubuntu0.14.04.1
    • 5.5.60-0ubuntu0.14.04.1
    • 5.5.61-0ubuntu0.14.04.1
    • 5.5.62-0ubuntu0.14.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mysql-5.7 Ubuntu:Pro:16.04:LTS

    Versions
    • 5.7.11-0ubuntu4
    • 5.7.11-0ubuntu5
    • 5.7.11-0ubuntu6
    • 5.7.12-0ubuntu1
    • 5.7.12-0ubuntu1.1
    • 5.7.13-0ubuntu0.16.04.2
    • 5.7.15-0ubuntu0.16.04.1
    • 5.7.16-0ubuntu0.16.04.1
    • 5.7.17-0ubuntu0.16.04.1
    • 5.7.17-0ubuntu0.16.04.2
    • 5.7.18-0ubuntu0.16.04.1
    • 5.7.19-0ubuntu0.16.04.1
    • 5.7.20-0ubuntu0.16.04.1
    • 5.7.21-0ubuntu0.16.04.1
    • 5.7.22-0ubuntu0.16.04.1
    • 5.7.23-0ubuntu0.16.04.1
    • 5.7.24-0ubuntu0.16.04.1
    • 5.7.25-0ubuntu0.16.04.2
    • 5.7.26-0ubuntu0.16.04.1
    • 5.7.27-0ubuntu0.16.04.1
    • 5.7.28-0ubuntu0.16.04.2
    • 5.7.29-0ubuntu0.16.04.1
    • 5.7.30-0ubuntu0.16.04.1
    • 5.7.31-0ubuntu0.16.04.1
    • 5.7.32-0ubuntu0.16.04.1
    • 5.7.33-0ubuntu0.16.04.1
    • 5.7.35-0ubuntu0.16.04.1+esm1
    • 5.7.36-0ubuntu0.16.04.1+esm1
    • 5.7.37-0ubuntu0.16.04.1+esm1
    • 5.7.38-0ubuntu0.16.04.1+esm1
    • 5.7.39-0ubuntu0.16.04.1+esm2
    • 5.7.40-0ubuntu0.16.04.1+esm1
    • 5.7.41-0ubuntu0.16.04.1+esm1
    • 5.7.42-0ubuntu0.16.04.1+esm1
    • 5.7.43-0ubuntu0.16.04.1+esm1
    • 5.7.44-0ubuntu0.16.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • percona-server-5.6 Ubuntu:16.04:LTS

    Versions
    • 5.6.22-rel71.0-0ubuntu2
    • 5.6.22-rel71.0-0ubuntu4
    • 5.6.22-rel71.0-0ubuntu4.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • percona-xtradb-cluster-5.6 Ubuntu:16.04:LTS

    Versions
    • 5.6.21-25.8-0ubuntu2
    • 5.6.21-25.8-0ubuntu3
    • 5.6.21-25.8-0ubuntu3.1
    • 5.6.21-25.8-0ubuntu3.2
    • 5.6.34-26.19-0ubuntu0.16.04.1
    • 5.6.34-26.19-0ubuntu0.16.04.2
    • 5.6.37-26.21-0ubuntu0.16.04.1
    • 5.6.37-26.21-0ubuntu0.16.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mysql-5.7 Ubuntu:Pro:18.04:LTS

    Versions
    • 5.7.19-0ubuntu1
    • 5.7.20-0ubuntu0.17.10.1
    • 5.7.20-1ubuntu1
    • 5.7.21-1ubuntu1
    • 5.7.22-0ubuntu18.04.1
    • 5.7.23-0ubuntu0.18.04.1
    • 5.7.24-0ubuntu0.18.04.1
    • 5.7.25-0ubuntu0.18.04.2
    • 5.7.26-0ubuntu0.18.04.1
    • 5.7.27-0ubuntu0.18.04.1
    • 5.7.28-0ubuntu0.18.04.4
    • 5.7.29-0ubuntu0.18.04.1
    • 5.7.30-0ubuntu0.18.04.1
    • 5.7.31-0ubuntu0.18.04.1
    • 5.7.32-0ubuntu0.18.04.1
    • 5.7.33-0ubuntu0.18.04.1
    • 5.7.34-0ubuntu0.18.04.1
    • 5.7.35-0ubuntu0.18.04.1
    • 5.7.35-0ubuntu0.18.04.2
    • 5.7.36-0ubuntu0.18.04.1
    • 5.7.37-0ubuntu0.18.04.1
    • 5.7.38-0ubuntu0.18.04.1
    • 5.7.39-0ubuntu0.18.04.2
    • 5.7.40-0ubuntu0.18.04.1
    • 5.7.41-0ubuntu0.18.04.1
    • 5.7.42-0ubuntu0.18.04.1
    • 5.7.43-0ubuntu0.18.04.1+esm1
    • 5.7.44-0ubuntu0.18.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mysql-8.0 Ubuntu:Pro:20.04:LTS

    Versions
    • 8.0.17-0ubuntu2
    • 8.0.17-0ubuntu3
    • 8.0.18-0ubuntu3
    • 8.0.18-0ubuntu4
    • 8.0.18-0ubuntu5
    • 8.0.19-0ubuntu2
    • 8.0.19-0ubuntu3
    • 8.0.19-0ubuntu4
    • 8.0.19-0ubuntu5
    • 8.0.20-0ubuntu0.20.04.1
    • 8.0.21-0ubuntu0.20.04.3
    • 8.0.21-0ubuntu0.20.04.4
    • 8.0.22-0ubuntu0.20.04.2
    • 8.0.22-0ubuntu0.20.04.3
    • 8.0.23-0ubuntu0.20.04.1
    • 8.0.25-0ubuntu0.20.04.1
    • 8.0.26-0ubuntu0.20.04.2
    • 8.0.26-0ubuntu0.20.04.3
    • 8.0.27-0ubuntu0.20.04.1
    • 8.0.28-0ubuntu0.20.04.3
    • 8.0.29-0ubuntu0.20.04.2
    • 8.0.29-0ubuntu0.20.04.3
    • 8.0.30-0ubuntu0.20.04.2
    • 8.0.31-0ubuntu0.20.04.1
    • 8.0.31-0ubuntu0.20.04.2
    • 8.0.32-0buntu0.20.04.1
    • 8.0.32-0ubuntu0.20.04.2
    • 8.0.33-0ubuntu0.20.04.1
    • 8.0.33-0ubuntu0.20.04.2
    • 8.0.33-0ubuntu0.20.04.4
    • 8.0.34-0ubuntu0.20.04.1
    • 8.0.35-0ubuntu0.20.04.1
    • 8.0.36-0ubuntu0.20.04.1
    • 8.0.37-0ubuntu0.20.04.3
    • 8.0.39-0ubuntu0.20.04.1
    • 8.0.40-0ubuntu0.20.04.1
    • 8.0.41-0ubuntu0.20.04.1
    • 8.0.42-0ubuntu0.20.04.1
    • 8.0.43-0ubuntu0.20.04.1+esm1
    • 8.0.45-0ubuntu0.20.04.1+esm2
    Affected ranges
    • ECOSYSTEM: < 8.0.46-0ubuntu0.20.04.1+esm2

    Update to 8.0.46-0ubuntu0.20.04.1+esm2

  • mariadb-10.3 Ubuntu:20.04:LTS

    Versions
    • 1:10.3.17-1
    • 1:10.3.18-1
    • 1:10.3.19-1
    • 1:10.3.21-2
    • 1:10.3.22-1
    • 1:10.3.22-1ubuntu1
    • 1:10.3.25-0ubuntu0.20.04.1
    • 1:10.3.29-0ubuntu0.20.04.1
    • 1:10.3.30-0ubuntu0.20.04.1
    • 1:10.3.31-0ubuntu0.20.04.1
    • 1:10.3.32-0ubuntu0.20.04.1
    • 1:10.3.34-0ubuntu0.20.04.1
    • 1:10.3.37-0ubuntu0.20.04.1
    • 1:10.3.38-0ubuntu0.20.04.1
    • 1:10.3.39-0ubuntu0.20.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mysql-8.0 Ubuntu:22.04:LTS

    Versions
    • 8.0.26-0ubuntu1
    • 8.0.27-0ubuntu0.21.10.1
    • 8.0.28-0ubuntu3
    • 8.0.28-0ubuntu4
    • 8.0.29-0ubuntu0.22.04.1
    • 8.0.29-0ubuntu0.22.04.2
    • 8.0.29-0ubuntu0.22.04.3
    • 8.0.30-0ubuntu0.22.04.1
    • 8.0.31-0ubuntu0.22.04.1
    • 8.0.32-0buntu0.22.04.1
    • 8.0.32-0ubuntu0.22.04.2
    • 8.0.33-0ubuntu0.22.04.1
    • 8.0.33-0ubuntu0.22.04.2
    • 8.0.33-0ubuntu0.22.04.4
    • 8.0.34-0ubuntu0.22.04.1
    • 8.0.35-0ubuntu0.22.04.1
    • 8.0.36-0ubuntu0.22.04.1
    • 8.0.37-0ubuntu0.22.04.3
    • 8.0.39-0ubuntu0.22.04.1
    • 8.0.40-0ubuntu0.22.04.1
    • 8.0.41-0ubuntu0.22.04.1
    • 8.0.42-0ubuntu0.22.04.1
    • 8.0.42-0ubuntu0.22.04.2
    • 8.0.43-0ubuntu0.22.04.1
    • 8.0.43-0ubuntu0.22.04.2
    • 8.0.44-0ubuntu0.22.04.1
    • 8.0.44-0ubuntu0.22.04.2
    • 8.0.45-0ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: < 8.0.46-0ubuntu0.22.04.2

    Update to 8.0.46-0ubuntu0.22.04.2

  • mysql-8.0 Ubuntu:24.04:LTS

    Versions
    • 8.0.34-1ubuntu1
    • 8.0.35-1ubuntu1
    • 8.0.35-1ubuntu2
    • 8.0.36-1
    • 8.0.36-2ubuntu1
    • 8.0.36-2ubuntu2
    • 8.0.36-2ubuntu3
    • 8.0.37-0ubuntu0.24.04.1
    • 8.0.39-0ubuntu0.24.04.1
    • 8.0.39-0ubuntu0.24.04.2
    • 8.0.40-0ubuntu0.24.04.1
    • 8.0.41-0ubuntu0.24.04.1
    • 8.0.42-0ubuntu0.24.04.1
    • 8.0.42-0ubuntu0.24.04.2
    • 8.0.43-0ubuntu0.24.04.1
    • 8.0.43-0ubuntu0.24.04.2
    • 8.0.44-0ubuntu0.24.04.1
    • 8.0.44-0ubuntu0.24.04.2
    • 8.0.45-0ubuntu0.24.04.1
    Affected ranges
    • ECOSYSTEM: < 8.0.46-0ubuntu0.24.04.2

    Update to 8.0.46-0ubuntu0.24.04.2

  • mysql-8.4 Ubuntu:25.10

    Versions
    • 8.4.4-0ubuntu2
    • 8.4.5-0ubuntu1
    • 8.4.5-0ubuntu2
    • 8.4.5-0ubuntu3
    • 8.4.6-0ubuntu1
    • 8.4.6-0ubuntu3
    • 8.4.7-0ubuntu0.25.10.2
    • 8.4.7-0ubuntu0.25.10.3
    • 8.4.8-0ubuntu0.25.10.1
    Affected ranges
    • ECOSYSTEM: < 8.4.9-0ubuntu0.25.10.1

    Update to 8.4.9-0ubuntu0.25.10.1

  • mysql-8.4 Ubuntu:26.04:LTS

    Versions
    • 8.4.6-0ubuntu3
    • 8.4.7-0ubuntu2
    • 8.4.7-0ubuntu3
    • 8.4.8-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 8.4.9-0ubuntu0.26.04.1

    Update to 8.4.9-0ubuntu0.26.04.1

Original sources

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