Bug 2557855 (CVE-2026-101678)

Summary:	CVE-2026-101678 connector/j: MySQL Connector/J: Denial of Service via network access
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	gmalinko, janstey, pdelbell, rhel-process-autobot, rstepani, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in MySQL Connector/J. An unauthenticated remote attacker could exploit this vulnerability across the network by enticing a user to interact with malicious requests. A successful attack allows the attacker to cause a partial Denial of Service (DoS), leading to temporary service disruption for applications using the connector.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2565181, 2565182, 2565183
Bug Blocks:

Description OSIDB Bzimport 2026-10-21 00:33:23 UTC

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J).   The supported version that is affected is 26.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Connectors.  Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Connectors. CVSS 3.1 Base Score 4.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).