RHSA-2026:26221

Vulnerability from csaf_redhat - Published: 2026-06-16 08:58 - Updated: 2026-06-23 13:19
Summary
Red Hat Security Advisory: Technical preview of the satellite/iop-vmaas-rhel9 container image
Severity
Moderate
Notes
Topic: A new satellite/iop-vmaas-rhel9 container image is now available as a technical preview in the Red Hat container registry.
Details: Red Hat Lightspeed in Satellite analyzes system health and configuration by applying predefined rules to a small set of local data, such as installed packages, running services, and configuration settings.
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 urllib3, an HTTP client library for Python. When using the low-level API via `ProxyManager.connection_from_url().urlopen()` with `assert_same_host=False`, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitive information.

CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Satellite 6.18:registry.redhat.io/satellite/iop-vmaas-rhel9@sha256:a359d2c6b60827c4709f5f0ada1799bfc890fe5f11d7d8f595df2d121fc6ae24_amd64
Vendor Fix fix
Threats
Impact Moderate

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        "text": "Red Hat Lightspeed in Satellite analyzes system health and configuration by applying  predefined rules to a small set of local data, such as installed packages,  running services, and configuration settings.",
        "title": "Details"
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  "vulnerabilities": [
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      "cwe": {
        "id": "CWE-201",
        "name": "Insertion of Sensitive Information Into Sent Data"
      },
      "discovery_date": "2026-05-13T17:01:41.663622+00:00",
      "ids": [
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          "text": "2477167"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via `ProxyManager.connection_from_url().urlopen()` with `assert_same_host=False`, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitive information.",
          "title": "Vulnerability description"
        },
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          "text": "urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers",
          "title": "Vulnerability summary"
        },
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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.",
          "title": "CVSS score applicability"
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      "release_date": "2026-05-13T15:20:24.588000+00:00",
      "remediations": [
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          "details": "For Red Hat Lightspeed in Satellite installation see the Red Hat Satellite documentation.",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
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      "title": "urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers"
    }
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}


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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

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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.
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