CVE-2026-15801

Cri-o: cri-o: insufficient validation during container checkpoint restore

Published Sep 21, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Description
A vulnerability was found in CRI-O related to the container checkpoint and restore feature. When CRI-O is configured to restore containers from checkpoint archives, insufficient validation of restore metadata may allow a user with sufficient privileges to perform unintended operations on the host filesystem. Successful exploitation requires that container checkpoint and restore functionality is enabled, which is not the default configuration. An attacker must also be able to trigger restoration of a container from untrusted checkpoint content.

Remediation

Vendor Workaround

Until the relevant CRI-O/OpenShift security updates are available, this issue can be mitigated by implementing one or more of the following measures: 1. Do not enable container checkpoint and restore functionality unless it is explicitly required for your environment. 2. Restrict permissions to create workloads and to access node-level container runtime interfaces to trusted administrators only. 3. Do not restore containers from untrusted or unverified checkpoint sources.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:5
Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Vendors & Products Redhat openshift Container Platform
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A vulnerability was found in CRI-O related to the container checkpoint and restore feature. When CRI-O is configured to restore containers from checkpoint archives, insufficient validation of restore metadata may allow a user with sufficient privileges to perform unintended operations on the host filesystem. Successful exploitation requires that container checkpoint and restore functionality is enabled, which is not the default configuration. An attacker must also be able to trigger restoration of a container from untrusted checkpoint content.
Title Cri-o: cri-o: insufficient validation during container checkpoint restore
First Time appeared Redhat
Redhat openshift
Weaknesses CWE-22
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat
Redhat openshift
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 4, 2026, 3:24 PM
Reserved
Jul 15, 2026, 6:28 AM
Status
Awaiting Analysis
Published
Sep 21, 2026, 9:17 AM
Modified
Oct 30, 2026, 1:16 AM
Severity
Important
Public date
Sep 21, 2026, 12:01 AM