CVE-2026-40886

high Red Hat
CVSS v3 Base Score
7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.1%
Exploitation probability in 30 days
Top 83% 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: April 23, 2026 (77 days ago)
Last Modified: April 23, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Argo Workflows, an open-source system for managing tasks in Kubernetes. An attacker with appropriate permissions can trigger a system-wide crash by submitting a specially crafted workflow pod with a malformed annotation. This vulnerability leads to a persistent Denial of Service (DoS), preventing all workflow processing until manual intervention removes the poisoned pod.

CWE

CWE-1285

Affected Products

Red Hat OpenShift AI (RHOAI)

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com