RHSA-2026:37530

Vulnerability from csaf_redhat - Published: 2026-07-10 03:00 - Updated: 2026-07-26 17:02
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: python-setuptools: * python-setuptools-wheel-83.0.0-4.hum1 (noarch) * python3-setuptools-83.0.0-4.hum1 (noarch) * python-setuptools-83.0.0-4.hum1.src (src)
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-2026-59890

A flaw was found in setuptools, a Python package management tool. The FileList component, responsible for handling file exclusions, did not properly normalize Unicode file names when applying exclusion rules. This oversight could allow a specially crafted file name, using a different Unicode normalization form (NFD) on macOS APFS or HFS+ file systems, to bypass an intended exclusion rule (NFC). As a result, sensitive files that should have been excluded could be inadvertently included in a source distribution, leading to information disclosure.

6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CWE-1025 - Comparison Using Wrong Factors
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:python-setuptools-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:python-setuptools-main@src —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
To clipboard 

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      "discovery_date": "2026-07-08T17:02:04.022644+00:00",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
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          "details": "Moderate"
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      "title": "setuptools: setuptools: MANIFEST.in exclusion bypass in sdist via Unicode normalization collision (NFC/NFD)"
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}



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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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