CVE-2026-77176 (GCVE-0-2026-77176)
Vulnerability from cvelistv5 – Published: 2026-08-20 16:20 – Updated: 2026-08-20 16:20
VLAI
EPSS
VEX
Title
Kata-containers: insufficient validation of createcontainer mount and storage rules in genpolicy
Summary
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.
Severity
8.1 (High)
CWE
- CWE-73 - External Control of File Name or Path
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-77176 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2517502 | issue-trackingx_refsource_REDHAT |
| https://github.com/kata-containers/kata-container… |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-08-20 12:00
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"credits": [
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"value": "Red Hat would like to thank Adam Korcz (ADA Logistics) for reporting this issue."
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}
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"userInteraction": "NONE",
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},
{
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"tags": [
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"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517502"
},
{
"url": "https://github.com/kata-containers/kata-containers/security/advisories/GHSA-fmg6-v47x-52wr"
}
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"time": "2026-08-17T14:34:24.185Z",
"value": "Reported to Red Hat."
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"time": "2026-08-20T12:00:00.000Z",
"value": "Made public."
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"title": "Kata-containers: insufficient validation of createcontainer mount and storage rules in genpolicy",
"x_generator": {
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"redhat_vex": {
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"cve": "CVE-2026-77176",
"id": "CVE-2026-77176",
"initial_release_date": "2026-08-20T12:00:00+00:00",
"product_status:known_affected": "3",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kata-containers: Insufficient validation of CreateContainer mount and storage rules in genpolicy",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77176.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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