What’s Vulnerable › Vulnerabilities

CVE-2026-77176: Kata-containers: insufficient validation of createcontainer mount and storage rules in genpolicy

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-20 · updated 2026-10-31
• Weakness: CWE-73

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.

Affected products

• Red Hat OpenShift Container Platform 4.18: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-77176
• https://bugzilla.redhat.com/show_bug.cgi?id=2517502
• https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr
• http://www.openwall.com/lists/oss-security/2026/08/20/19

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