CVE-2026-77176
Kata-containers: insufficient validation of createcontainer mount and storage rules in genpolicy
CVSS Score
8.1
EPSS Score
0.4%
EPSS Percentile
34th
A flaw was found in Kata Containers. In configurations utilizing genpolicy for Confidential Containers guest protection, a malicious host operator can exploit insufficient validation of CreateContainer mount and storage rules. This allows them to mount arbitrary container-rootfs paths over sensitive host locations or provision arbitrary content, potentially exposing confidential information or enabling the acceptance of attacker-controlled input.
| CWE | CWE-73 |
| Vendor | red hat |
| Product | red hat openshift container platform 4 |
| Published | Aug 20, 2026 |
| Last Updated | Sep 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Red Hat / Red Hat OpenShift Container Platform 4
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected Red Hat / Red Hat OpenShift Container Platform 4
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-77176 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2517502 github.com: https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr openwall.com: http://www.openwall.com/lists/oss-security/2026/08/20/19
Credits
Red Hat would like to thank Adam Korcz (ADA Logistics) for reporting this issue.