High severity · published Aug 20, 2026
CVE-2026-77176
Kata-containers: insufficient validation of createcontainer mount and storage rules in genpolicy
8.1
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat OpenShift Container Platform 4
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77176
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77176
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
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/08/20/19
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