Vulnerability-Lookup

OESA-2026-1196 (CVE-2026-21936)

Vulnerability from osv_openeuler – Published: 2026-01-23 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

mysql security update

Details

MySQL is a multi-user, multi-threaded SQL database server. MySQL is a client/server implementation consisting of a server daemon (mysqld) and many different client programs and libraries. The base package contains the standard MySQL client programs and generic MySQL files. %if

Security Fix(es):

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21936)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21937)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21941)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21964)

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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).(CVE-2026-21968)

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21936	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21937	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21941	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21948	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21964	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-21968	ADVISORY

JSON

To clipboard

{
  "affected": [
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      "ecosystem_specific": {
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          "mysql-debugsource-8.0.45-1.oe2203sp4.aarch64.rpm",
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          "mysql-debuginfo-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-debugsource-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-devel-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-errmsg-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-help-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-libs-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-server-8.0.45-1.oe2003sp4.x86_64.rpm",
          "mysql-test-8.0.45-1.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "mysql",
        "purl": "pkg:rpm/openEuler/mysql\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.0.45-1.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "MySQL is a multi-user, multi-threaded SQL database server. MySQL is a client/server implementation consisting of a server daemon (mysqld) and many different client programs and libraries. The base package contains the standard MySQL client programs and generic MySQL files. %if\r\n\r\nSecurity Fix(es):\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21936)\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21937)\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21941)\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21948)\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Thread Pooling).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).(CVE-2026-21964)\n\nVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and  9.0.0-9.5.0. 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).(CVE-2026-21968)",
  "id": "OESA-2026-1196",
  "modified": "2026-08-06T11:10:13Z",
  "published": "2026-01-23T11:10:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1196"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21936"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21937"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21941"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21948"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21964"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21968"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mysql security update",
  "upstream": [
    "CVE-2026-21936",
    "CVE-2026-21937",
    "CVE-2026-21941",
    "CVE-2026-21948",
    "CVE-2026-21964",
    "CVE-2026-21968"
  ]
}

CVE-2026-21936 (GCVE-0-2026-21936)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 20:57

Summary

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 20:57 UTC

CWE

Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Cluster.
CWE-noinfo Not enough information

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Oracle Corporation	MySQL Cluster	Affected: 7.6.0 , ≤ 7.6.36 (custom) Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom)
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21936",
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  },
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CVE-2026-21937 (GCVE-0-2026-21937)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 20:58

Summary

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 20:58 UTC

CWE

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.
CWE-noinfo Not enough information

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom) cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
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                "id": "CVE-2026-21937",
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CVE-2026-21941 (GCVE-0-2026-21941)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 14:59

Summary

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 14:58 UTC

CWE

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.
CWE-400 - Uncontrolled Resource Consumption

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom) cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-21948 (GCVE-0-2026-21948)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 15:12

Summary

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 15:10 UTC

CWE

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.
CWE-400 - Uncontrolled Resource Consumption

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom) cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-21964 (GCVE-0-2026-21964)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 20:04

Summary

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 20:01 UTC

CWE

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.
CWE-noinfo Not enough information

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom) cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server::::::::

Show details on NVD website

JSON

To clipboard

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CVE-2026-21968 (GCVE-0-2026-21968)

Vulnerability from cvelistv5 – Published: 2026-01-20 21:56 – Updated: 2026-01-21 19:21

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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).

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-21 19:20 UTC

CWE

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.
CWE-noinfo Not enough information

Assigner

oracle mitre root

References

1 reference

URL	Tags
https://www.oracle.com/security-alerts/cpujan2026.html	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Oracle Corporation	MySQL Server	Affected: 8.0.0 , ≤ 8.0.44 (custom) Affected: 8.4.0 , ≤ 8.4.7 (custom) Affected: 9.0.0 , ≤ 9.5.0 (custom) cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server:::::::: cpe:2.3:a:oracle:mysql_server::::::::

Show details on NVD website

JSON

To clipboard

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      "providerMetadata": {
        "dateUpdated": "2026-01-20T21:56:34.542Z",
        "orgId": "43595867-4340-4103-b7a2-9a5208d29a85",
        "shortName": "oracle"
      },
      "references": [
        {
          "name": "Oracle Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2026.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "43595867-4340-4103-b7a2-9a5208d29a85",
    "assignerShortName": "oracle",
    "cveId": "CVE-2026-21968",
    "datePublished": "2026-01-20T21:56:34.542Z",
    "dateReserved": "2026-01-05T18:07:34.714Z",
    "dateUpdated": "2026-01-21T19:21:31.349Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2026-1196 (CVE-2026-21936)

CVE-2026-21936 (GCVE-0-2026-21936)

CVE-2026-21937 (GCVE-0-2026-21937)

CVE-2026-21941 (GCVE-0-2026-21941)

CVE-2026-21948 (GCVE-0-2026-21948)

CVE-2026-21964 (GCVE-0-2026-21964)

CVE-2026-21968 (GCVE-0-2026-21968)

Tags

Sightings

Nomenclature

Related by attack behaviour