RHSA-2026:46685

Vulnerability from csaf_redhat - Published: 2026-07-27 13:04 - Updated: 2026-11-01 05:10
Summary
Red Hat Security Advisory: OpenShift Virtualization v4.19 Images
Severity
Important
Notes
Topic: Red Hat OpenShift Virtualization release v4.19 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 v4.19 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 the `sanitize-html` library. Under its default configuration, an attacker can embed malicious content within a disallowed `xmp` element. This vulnerability allows the attacker to bypass the HTML sanitization process, leading to stored Cross-Site Scripting (XSS). Successful exploitation can result in arbitrary code execution or information disclosure when a user views the affected content.

CWE-79 - Improper Neutralization of Input During Web Page Generation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Container Native Virtualization 4.19:registry.redhat.io/container-native-virtualization/kubevirt-console-plugin-rhel9@sha256:3eaf423aed9cdb9cdb90772b282298de8396be63ae9c5bfeefb71835c668a18a_s390x —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.19:registry.redhat.io/container-native-virtualization/kubevirt-console-plugin-rhel9@sha256:946645ea61d31185f5e52d12b67aac639f9bc64de03f846ae9250171a1b608b0_arm64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Container Native Virtualization 4.19:registry.redhat.io/container-native-virtualization/kubevirt-console-plugin-rhel9@sha256:ec0830c6ab600e557a1acfb9cf47a66183baf25f812b869672f7a3e3746e7a8a_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important

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      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation"
      },
      "discovery_date": "2026-06-12T21:02:24.911971+00:00",
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          "text": "2488565"
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          "text": "A flaw was found in the `sanitize-html` library. Under its default configuration, an attacker can embed malicious content within a disallowed `xmp` element. This vulnerability allows the attacker to bypass the HTML sanitization process, leading to stored Cross-Site Scripting (XSS). Successful exploitation can result in arbitrary code execution or information disclosure when a user views the affected content.",
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          "text": "This is an Important flaw. The `sanitize-html` library, used in Red Hat products, is susceptible to a stored Cross-Site Scripting (XSS) bypass. Malicious content within a disallowed `xmp` element can be rendered as live HTML or JavaScript due to a sanitizer bypass in the default configuration. This can lead to arbitrary code execution or information disclosure when affected content is viewed.",
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          "details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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      "scores": [
        {
          "cvss_v3": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
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          ]
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "sanitize-html: `sanitize-html`: Stored Cross-Site Scripting via HTML sanitizer bypass"
    }
  ]
}



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