RHSA-2026:36359

Vulnerability from csaf_redhat - Published: 2026-07-07 20:17 - Updated: 2026-07-09 21:10
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: python-pip: * python-pip-wheel-26.1.2-1.hum1 (noarch) * python3-pip-26.1.2-1.hum1 (noarch) * python-pip-26.1.2-1.hum1.src (src) Security Fix(es): python-pip: * CVE-2026-8643
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.
CVE-2026-3219

A flaw was found in pip. This vulnerability occurs because pip incorrectly processes concatenated tar and ZIP files as ZIP files, regardless of their true format. This improper handling can lead to confusing installation behavior, potentially causing the installation of unintended or 'incorrect' files. This could allow an attacker to influence the installation process by providing a specially crafted archive.

5.0 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
CWE-1287 - Improper Validation of Specified Type of Input
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:python-pip-main@noarch —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python-pip-main@src —
Vendor Fix fix
Threats
Impact Moderate
CVE-2026-8643

A flaw was found in pip, the package installer for Python. A remote attacker can exploit this vulnerability by tricking a victim into installing a malicious Python wheel. This wheel contains specially crafted entry-point names that use directory traversal or absolute paths. This allows pip to write generated script wrappers outside the intended installation directory, leading to arbitrary file overwrite. This can severely impact system integrity and availability, and in certain scenarios, may lead to arbitrary code execution.

8.0 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:python-pip-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:python-pip-main@src —
Vendor Fix fix
Workaround
Threats
Impact Important
References
Acknowledgments
To clipboard 

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        "text": "This update includes the following RPMs:\n\npython-pip:\n  * python-pip-wheel-26.1.2-1.hum1 (noarch)\n  * python3-pip-26.1.2-1.hum1 (noarch)\n  * python-pip-26.1.2-1.hum1.src (src)\n\nSecurity Fix(es):\n\npython-pip:\n  * CVE-2026-8643",
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        "name": "Improper Validation of Specified Type of Input"
      },
      "discovery_date": "2026-04-20T16:01:53.782431+00:00",
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          "text": "2459774"
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          "text": "A flaw was found in pip. This vulnerability occurs because pip incorrectly processes concatenated tar and ZIP files as ZIP files, regardless of their true format. This improper handling can lead to confusing installation behavior, potentially causing the installation of unintended or \u0027incorrect\u0027 files. This could allow an attacker to influence the installation process by providing a specially crafted archive.",
          "title": "Vulnerability description"
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        {
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          "text": "pip: pip: Incorrect file installation due to improper archive handling",
          "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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          "summary": "https://mail.python.org/archives/list/security-announce@python.org/thread/QAJ5JIVWWCAJ4EZL2FP5MOOW35JS7LRJ/",
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/QAJ5JIVWWCAJ4EZL2FP5MOOW35JS7LRJ/"
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            "Red Hat Hardened Images:python-pip-main@src"
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            "attackVector": "LOCAL",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "pip: pip: Incorrect file installation due to improper archive handling"
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      "cve": "CVE-2026-8643",
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        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
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      "ids": [
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          "text": "2460927"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in pip, the package installer for Python. A remote attacker can exploit this vulnerability by tricking a victim into installing a malicious Python wheel. This wheel contains specially crafted entry-point names that use directory traversal or absolute paths. This allows pip to write generated script wrappers outside the intended installation directory, leading to arbitrary file overwrite. This can severely impact system integrity and availability, and in certain scenarios, may lead to arbitrary code execution.",
          "title": "Vulnerability description"
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          "text": "python-pip: Path traversal via malicious entry point name in pip wheel installation allows arbitrary file overwrite",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Important flaw in pip\u0027s wheel installation process allows for arbitrary file overwrite due to path traversal. An attacker could exploit this by convincing a user to install a specially crafted malicious Python wheel. While file overwrites are limited to the installing user\u0027s permissions, using `pip install` with elevated privileges in Red Hat environments significantly increases the potential impact, potentially leading to system integrity compromise or arbitrary code execution.",
          "title": "Statement"
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        {
          "category": "general",
          "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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          "url": "https://access.redhat.com/security/cve/CVE-2026-8643"
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8643"
        },
        {
          "category": "external",
          "summary": "https://github.com/pypa/pip/commit/8eb178480bd1a2b223f509fc430796b265158dfb",
          "url": "https://github.com/pypa/pip/commit/8eb178480bd1a2b223f509fc430796b265158dfb"
        }
      ],
      "release_date": "2026-05-27T17:03:36.585000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-07T20:17:23+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:python-pip-main@noarch",
            "Red Hat Hardened Images:python-pip-main@src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:36359"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, users should avoid installing Python wheels from untrusted sources. It is strongly advised against using `pip install` with elevated privileges, such as `sudo`, when installing wheels. Additionally, administrators should inspect `entry_points.txt` within wheels for path separators or absolute paths before installation.",
          "product_ids": [
            "Red Hat Hardened Images:python-pip-main@noarch",
            "Red Hat Hardened Images:python-pip-main@src"
          ]
        }
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:python-pip-main@noarch",
            "Red Hat Hardened Images:python-pip-main@src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "python-pip: Path traversal via malicious entry point name in pip wheel installation allows arbitrary file overwrite"
    }
  ]
}



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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

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.


Detection rules are retrieved from Rulezet.