RHSA-2026:59636
Vulnerability from csaf_redhat - Published: 2026-08-25 21:52 - Updated: 2026-08-26 04:24Summary
Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.6 security update
Severity
Important
Notes
Topic: Red Hat multicluster engine for Kubernetes v2.11 general availability release images, which provide security fixes, bug fixes, and updated container images.
Red Hat Product Security has rated this update as having a security impact of Important.
A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE links in the References section.
Details: The multicluster engine for Kubernetes provides the foundational components
that are necessary for the centralized management of multiple
Kubernetes-based clusters across data centers, public clouds, and private
clouds.
You can use the engine to create new Red Hat OpenShift Container Platform
clusters or to bring existing Kubernetes-based clusters under management by
importing them. After the clusters are managed, you can use the APIs that
are provided by the engine to distribute configuration based on placement
policy.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in mce-operator-bundle. The build process fetches and executes scripts from a remote repository without performing integrity checks, such as commit pinning or signature verification. This allows a malicious actor with write access to the remote repository to inject and execute arbitrary code during the build. The consequence is a compromised build process, potentially leading to the distribution of malicious software.
7.7 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: multicluster engine for Kubernetes 2.11:registry.redhat.io/multicluster-engine/mce-operator-bundle@sha256:8a49127018dce064332524e43158d247ddcb8d6cd4969fbd21d0febcba9ce6c6_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
8 references
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"cve": "CVE-2026-75569",
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"name": "Inclusion of Functionality from Untrusted Control Sphere"
},
"discovery_date": "2026-07-27T21:15:58+00:00",
"ids": [
{
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"text": "2519849"
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],
"notes": [
{
"category": "description",
"text": "A flaw was found in mce-operator-bundle. The build process fetches and executes scripts from a remote repository without performing integrity checks, such as commit pinning or signature verification. This allows a malicious actor with write access to the remote repository to inject and execute arbitrary code during the build. The consequence is a compromised build process, potentially leading to the distribution of malicious software.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "mce-operator-bundle: mce-operator-bundle: Bundle-generation business logic fetched from mutable stolostron/release@master",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability is rated as Important because it introduces a supply chain risk within the `mce-operator-bundle` build process. The build logic is fetched from a mutable master branch without integrity checks or commit pinning, allowing for the execution of untrusted code if the source repository is compromised. This could impact the integrity of delivered Red Hat products.",
"title": "Statement"
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"release_date": "2026-08-19T19:37:55.122000+00:00",
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"date": "2026-08-25T21:52:33+00:00",
"details": "For multicluster engine for Kubernetes, see the following documentation for\ndetails on how to install the images:\n\nhttps://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.16/html/clusters/cluster_mce_overview#mce-install-intro",
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"details": "The vulnerability resides within the build process of `mce-operator-bundle`, specifically concerning the fetching of build logic from a mutable source without integrity verification. As this issue pertains to the build-time integrity of the software, there are no direct runtime configuration or operational controls available for users to mitigate this vulnerability in deployed Red Hat products.",
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
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"title": "mce-operator-bundle: mce-operator-bundle: Bundle-generation business logic fetched from mutable stolostron/release@master"
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]
}
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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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