RHSA-2026:46623
Vulnerability from csaf_redhat - Published: 2026-07-27 12:25 - Updated: 2026-08-04 22:35Summary
Red Hat Security Advisory: OpenShift Virtualization v4.12 Images
Severity
Important
Notes
Topic: Red Hat OpenShift Virtualization release v4.12 is now available with updates to packages and images that fix several bugs and add enhancements.
Details: OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform.
This advisory contains OpenShift Virtualization v4.12 images.
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 DOMPurify, a tool designed to sanitize HTML, MathML, and SVG to prevent cross-site scripting (XSS) attacks. When performing in-place sanitization, DOMPurify could fail to properly process content within shadow DOM elements attached to a <template>.content. This oversight allows an attacker to embed malicious code, such as JavaScript, which could then execute when the sanitized template is used by an application, potentially leading to unauthorized actions or information disclosure.
8.1 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Container Native Virtualization 4.12:registry.redhat.io/container-native-virtualization/kubevirt-console-plugin@sha256:91f0b7aa48e6d376398742fd6517a23fa9b07c5947493457ec9dd49a9609ae50_amd64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial of Service (DoS) for the affected system.
7.5 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Container Native Virtualization 4.12:registry.redhat.io/container-native-virtualization/kubevirt-console-plugin@sha256:91f0b7aa48e6d376398742fd6517a23fa9b07c5947493457ec9dd49a9609ae50_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
21 references
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"name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
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"text": "A flaw was found in DOMPurify, a tool designed to sanitize HTML, MathML, and SVG to prevent cross-site scripting (XSS) attacks. When performing in-place sanitization, DOMPurify could fail to properly process content within shadow DOM elements attached to a \u003ctemplate\u003e.content. This oversight allows an attacker to embed malicious code, such as JavaScript, which could then execute when the sanitized template is used by an application, potentially leading to unauthorized actions or information disclosure.",
"title": "Vulnerability description"
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"text": "dompurify: DOMPurify: Cross-site scripting vulnerability allows code execution",
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"text": "This vulnerability in DOMPurify is rated as Important as it allows for cross-site scripting (XSS) attacks. When DOMPurify performs in-place sanitization, it may fail to properly process shadow DOM content within `\u003ctemplate\u003e.content`, enabling an attacker to embed and execute malicious JavaScript. This could lead to unauthorized actions or information disclosure in Red Hat products that utilize DOMPurify for sanitizing untrusted HTML, MathML, or SVG.",
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"title": "dompurify: DOMPurify: Cross-site scripting vulnerability allows code execution"
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{
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"name": "Unchecked Input for Loop Condition"
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"ids": [
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"title": "Vulnerability description"
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"text": "js-yaml: js-yaml: Denial of Service via crafted YAML documents",
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"text": "This vulnerability is rated as Important. Red Hat products utilizing `js-yaml` to process untrusted YAML input are susceptible to a denial of service, as a remote attacker can provide a crafted document that consumes excessive CPU resources. This is considered Important due to the potential for service disruption without requiring authentication or complex attack vectors.",
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{
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"details": "To reduce exposure, restrict the processing of untrusted YAML documents by applications that rely on `js-yaml`. Implement robust input validation and sanitization for all YAML data originating from external or untrusted sources. Consider limiting network access to services that parse YAML content to trusted networks or clients through appropriate firewall configurations.",
"product_ids": [
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"baseScore": 7.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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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.
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