CVE-2026-0543

medium Red Hat
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 76% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: January 13, 2026 (121 days ago)
Last Modified: January 13, 2026
Vendor: Red Hat

Description

Improper Input Validation (CWE-20) in Kibana's Email Connector can allow an attacker to cause an Excessive Allocation (CAPEC-130) through a specially crafted email address parameter. This requires an attacker to have authenticated access with view-level privileges sufficient to execute connector actions. The application attempts to process specially crafted email format, resulting in complete service unavailability for all users until manual restart is performed.

CWE

CWE-20

Affected Products

Logging Subsystem for Red Hat OpenShiftRed Hat JBoss Enterprise Application Platform 8Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat OpenShift distributed tracing 3Red Hat OpenStack Platform 16.2

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 discuss.elastic.co