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RHEL 9 : python3.12 (RHSA-2026:19177)

🗓️ 19 May 2026 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 17 Views

RHEL 9 hosts with Python 3.12 have multiple vulnerabilities per RHSA-2026:19177.

Related
Refs
Code
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: AIX/VIOS is affected by multiple vulnerabilities due to Python
19 Nov 202515:04
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in expat affects IBM Netezza Appliance
15 Dec 202512:35
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in expat library (CVE-2025-59375) affects Power HMC.
31 Mar 202615:27
–ibm
IBM Security Bulletins		Security Bulletin: Security vulnerabilities may affect IBM WebSphere Liberty and Expat that are shipped with IBM CICS TX Standard.
24 Mar 202613:54
–ibm
IBM Security Bulletins		Security Bulletin: Due to use of libexpat , IBM Sterling Connect:Direct Web Services is affected by large memory allocations issue.
17 Dec 202506:13
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to multiple Operator package issues
10 Jun 202618:06
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to multiple Operator package issues
27 Feb 202615:56
–ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect Enterprise Certified Container UBI updates
7 May 202613:38
–ibm
IBM Security Bulletins		Security Bulletin: IBM Financial Transaction Manager is impacted by multiple vulnerabilities in RedHat Proxy for Kubernetes RBAC authorization
9 Feb 202614:45
–ibm
IBM Security Bulletins		Security Bulletin: Oracle Outside In Technology (OIT) v8.5.7 BP9, v8.5.8 BP2 vulnerabilities CVE-2025-54874 (vulnerable), CVE-2025-59375 (vulnerable) in FileNet Content Manager (FNCM) Content Based Retrieval (CBR) content indexing
18 Jun 202613:17
–ibm
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    Python is an interpreted, interactive, object-oriented programming language, which includes modules,
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    Security Fix(es):

    * expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small
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    * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

    * cpython: Out-of-memory when loading Plist (CVE-2025-13837)

    * cpython: Header injection via newlines in data URL mediatype in Python (CVE-2025-15282)

    * cpython: Header injection in http.cookies.Morsel in Python (CVE-2026-0672)

    * cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297)

    * cpython: Incomplete control character validation in http.cookies (CVE-2026-3644)

    * cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224)

    * python: Python: Command-line option injection in webbrowser.open() via crafted URLs (CVE-2026-4519)

    * python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502)

    * python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression
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    * python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API
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    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
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      'content/public/ubi/dist/ubi9/9/ppc64le/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi9/9/s390x/appstream/debug',
      'content/public/ubi/dist/ubi9/9/s390x/appstream/os',
      'content/public/ubi/dist/ubi9/9/s390x/appstream/source/SRPMS',
      'content/public/ubi/dist/ubi9/9/s390x/codeready-builder/debug',
      'content/public/ubi/dist/ubi9/9/s390x/codeready-builder/os',
      'content/public/ubi/dist/ubi9/9/s390x/codeready-builder/source/SRPMS',
      'content/public/ubi/dist/ubi9/9/x86_64/appstream/debug',
      'content/public/ubi/dist/ubi9/9/x86_64/appstream/os',
      'content/public/ubi/dist/ubi9/9/x86_64/appstream/source/SRPMS',
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      'content/public/ubi/dist/ubi9/9/x86_64/codeready-builder/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'python3.12-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-debug-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-devel-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-idle-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-libs-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-test-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-tkinter-3.12.13-2.el9_8', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '9',
    'sp': '8',
    'repo_relative_urls': [
      'content/e4s/rhel9/9.8/aarch64/appstream/debug',
      'content/e4s/rhel9/9.8/aarch64/appstream/os',
      'content/e4s/rhel9/9.8/aarch64/appstream/source/SRPMS',
      'content/e4s/rhel9/9.8/ppc64le/appstream/debug',
      'content/e4s/rhel9/9.8/ppc64le/appstream/os',
      'content/e4s/rhel9/9.8/ppc64le/appstream/source/SRPMS',
      'content/e4s/rhel9/9.8/s390x/appstream/debug',
      'content/e4s/rhel9/9.8/s390x/appstream/os',
      'content/e4s/rhel9/9.8/s390x/appstream/source/SRPMS',
      'content/e4s/rhel9/9.8/x86_64/appstream/debug',
      'content/e4s/rhel9/9.8/x86_64/appstream/os',
      'content/e4s/rhel9/9.8/x86_64/appstream/source/SRPMS',
      'content/e6s/rhel9/9.8/aarch64/appstream/debug',
      'content/e6s/rhel9/9.8/aarch64/appstream/os',
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      'content/eus/rhel9/9.8/ppc64le/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.8/s390x/appstream/debug',
      'content/eus/rhel9/9.8/s390x/appstream/os',
      'content/eus/rhel9/9.8/s390x/appstream/source/SRPMS',
      'content/eus/rhel9/9.8/s390x/codeready-builder/debug',
      'content/eus/rhel9/9.8/s390x/codeready-builder/os',
      'content/eus/rhel9/9.8/s390x/codeready-builder/source/SRPMS',
      'content/eus/rhel9/9.8/x86_64/appstream/debug',
      'content/eus/rhel9/9.8/x86_64/appstream/os',
      'content/eus/rhel9/9.8/x86_64/appstream/source/SRPMS',
      'content/eus/rhel9/9.8/x86_64/codeready-builder/debug',
      'content/eus/rhel9/9.8/x86_64/codeready-builder/os',
      'content/eus/rhel9/9.8/x86_64/codeready-builder/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'python3.12-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-debug-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-devel-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-idle-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-libs-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-test-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'python3.12-tkinter-3.12.13-2.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var repo_relative_urls;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }

  if (!empty_or_null(constraint['repo_relative_urls'])) repo_relative_urls = constraint['repo_relative_urls'];

  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(rpm:exists_check))) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python3.12 / python3.12-debug / python3.12-devel / python3.12-idle / etc');
}

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10 Jun 2026 00:00Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5 - 8.1
CVSS 49.1
EPSS0.01279
SSVC
redhat enterprise linuxpython three twelvesecurity advisoryxml dtd overflow
17