CVE-2026-77176

high

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.

References

https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr

https://bugzilla.redhat.com/show_bug.cgi?id=2517502

https://access.redhat.com/security/cve/CVE-2026-77176

http://www.openwall.com/lists/oss-security/2026/08/20/19

Details

Source: Mitre, NVD

Published: 2026-08-20

Updated: 2026-08-21

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.00411