Insufficient Validation Vulnerability in Kata Containers Affecting Confidential Containers
CVE-2026-77176

8.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Container Platform 4
Vendor
CVE Published:
20 August 2026

What is CVE-2026-77176?

A flaw exists in Kata Containers where, in configurations using genpolicy for guest protection in Confidential Containers, a malicious host operator can exploit insufficient validation issues related to CreateContainer mount and storage rules. This vulnerability allows unauthorized mounting of arbitrary container-rootfs paths over sensitive host locations, which risks exposing confidential information. Moreover, it can lead to the provisioning of attacker-controlled content, posing significant security risks to data integrity and confidentiality.

References

https://access.redhat.com/security/cve/CVE-2026-77176
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2517502
issue-trackingx_refsource_REDHAT
https://github.com/kata-containers/kata-containers/securi...

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Adam Korcz (ADA Logistics) for reporting this issue.
.