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RHEL 9 : webkit2gtk3 (RHSA-2026:69098)

🗓️ 21 Sep 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities asreferenced in the RHSA-2026:69098 advisory. WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Sec...

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#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2026:69098. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(348598);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/21");

  script_cve_id(
    "CVE-2026-19154",
    "CVE-2026-19161",
    "CVE-2026-19173",
    "CVE-2026-19176",
    "CVE-2026-28984",
    "CVE-2026-43795",
    "CVE-2026-43804",
    "CVE-2026-64713",
    "CVE-2026-64715",
    "CVE-2026-64718",
    "CVE-2026-64728",
    "CVE-2026-64730",
    "CVE-2026-64753",
    "CVE-2026-64757",
    "CVE-2026-64778",
    "CVE-2026-64779",
    "CVE-2026-64780",
    "CVE-2026-64782",
    "CVE-2026-64783",
    "CVE-2026-64784",
    "CVE-2026-64787",
    "CVE-2026-65331",
    "CVE-2026-65332",
    "CVE-2026-65334",
    "CVE-2026-65335",
    "CVE-2026-65336",
    "CVE-2026-65337",
    "CVE-2026-65338",
    "CVE-2026-65340",
    "CVE-2026-65341",
    "CVE-2026-65351",
    "CVE-2026-76041",
    "CVE-2026-78376",
    "CVE-2026-79020",
    "CVE-2026-83596",
    "CVE-2026-84359",
    "CVE-2026-84635"
  );
  script_xref(name:"RHSA", value:"2026:69098");

  script_name(english:"RHEL 9 : webkit2gtk3 (RHSA-2026:69098)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates for webkit2gtk3.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as
referenced in the RHSA-2026:69098 advisory.

    WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

    Security Fix(es):

    * chromium-browser: Skia in Google Chrome: Sandbox escape via crafted HTML page (CVE-2026-19154)

    * chromium-browser: skia: Skia: Sandbox escape via out-of-bounds write in Chromium (CVE-2026-19173)

    * chromium-browser: Skia in Google Chrome: Cross-origin data leakage via uninitialized use
    (CVE-2026-19161)

    * chromium-browser: Skia: Arbitrary code execution via crafted HTML page (CVE-2026-19176)

    * chromium-browser: Chromium: Information leak allows web origin policy bypass (CVE-2026-76041)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-28984)

    * webkitgtk: Visiting a website may lead to an app denial-of-service (CVE-2026-43804)

    * webkitgtk: Websites may know if the user has visited a given link (CVE-2026-64713)

    * webkitgtk: Maliciously crafted web content may violate iframe sandboxing policy (CVE-2026-64728)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination
    (CVE-2026-64787)

    * webkitgtk: Visiting a website that frames malicious content may lead to UI spoofing (CVE-2026-64730)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64757)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64783)

    * webkitgtk: use-after-free of JSCValue function parameters (CVE-2026-78376)

    * chromium-browser: Skia: Information disclosure via out-of-bounds read in crafted media file
    (CVE-2026-79020)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-43795)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
    (CVE-2026-64715)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64718)

    * webkitgtk: Visiting a maliciously crafted website may leak sensitive data (CVE-2026-64778)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64779)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64780)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64782)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-64784)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65331)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65332)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65334)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65335)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65336)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65337)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65338)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65340)

    * webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2026-65341)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
    (CVE-2026-65351)

    * webkitgtk: Validate the full FeatureList array once in OpenTypeVerticalData findFeature (CVE-2026-83596)

    * chromium-browser: skia: chromium-browser: Information leak in Skia (CVE-2026-84359)

    * webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination
    (CVE-2026-84635)

    * webkitgtk: Processing maliciously crafted web content may disclose sensitive user information
    (CVE-2026-64753)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and
    other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524573");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524575");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524576");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524580");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524581");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524584");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2524585");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2526490");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2527168");
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  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2535532");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_69098.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cebacabb");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2026:69098");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL webkit2gtk3 package based on the guidance in RHSA-2026:69098.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
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  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-84635");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-83596");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 120, 125, 200, 346, 359, 416, 451, 664, 667, 693, 787, 824, 825);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
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  script_dependencies("ssh_get_info.nasl", "redhat_repos.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

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}


include('rpm2.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Red Hat' >!< os_product) audit(AUDIT_OS_NOT, 'Red Hat');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
if (!rhel_check_release_list(operator: 'ge', os_version: os_version, rhel_versions: ['9','9.8'])) audit(AUDIT_OS_NOT, 'Red Hat 9.x', 'Red Hat ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
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      'content/dist/rhel9/9.8/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.8/ppc64le/appstream/debug',
      'content/dist/rhel9/9.8/ppc64le/appstream/os',
      'content/dist/rhel9/9.8/ppc64le/appstream/source/SRPMS',
      'content/dist/rhel9/9.8/s390x/appstream/debug',
      'content/dist/rhel9/9.8/s390x/appstream/os',
      'content/dist/rhel9/9.8/s390x/appstream/source/SRPMS',
      'content/dist/rhel9/9.8/x86_64/appstream/debug',
      'content/dist/rhel9/9.8/x86_64/appstream/os',
      'content/dist/rhel9/9.8/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9.9/aarch64/appstream/debug',
      'content/dist/rhel9/9.9/aarch64/appstream/os',
      'content/dist/rhel9/9.9/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9.9/ppc64le/appstream/debug',
      'content/dist/rhel9/9.9/ppc64le/appstream/os',
      'content/dist/rhel9/9.9/ppc64le/appstream/source/SRPMS',
      'content/dist/rhel9/9.9/s390x/appstream/debug',
      'content/dist/rhel9/9.9/s390x/appstream/os',
      'content/dist/rhel9/9.9/s390x/appstream/source/SRPMS',
      'content/dist/rhel9/9.9/x86_64/appstream/debug',
      'content/dist/rhel9/9.9/x86_64/appstream/os',
      'content/dist/rhel9/9.9/x86_64/appstream/source/SRPMS',
      'content/dist/rhel9/9/aarch64/appstream/debug',
      'content/dist/rhel9/9/aarch64/appstream/os',
      'content/dist/rhel9/9/aarch64/appstream/source/SRPMS',
      'content/dist/rhel9/9/ppc64le/appstream/debug',
      'content/dist/rhel9/9/ppc64le/appstream/os',
      'content/dist/rhel9/9/ppc64le/appstream/source/SRPMS',
      'content/dist/rhel9/9/s390x/appstream/debug',
      'content/dist/rhel9/9/s390x/appstream/os',
      'content/dist/rhel9/9/s390x/appstream/source/SRPMS',
      'content/dist/rhel9/9/x86_64/appstream/debug',
      'content/dist/rhel9/9/x86_64/appstream/os',
      'content/dist/rhel9/9/x86_64/appstream/source/SRPMS',
      'content/public/ubi/dist/ubi9/9/aarch64/appstream/debug',
      'content/public/ubi/dist/ubi9/9/aarch64/appstream/os',
      'content/public/ubi/dist/ubi9/9/aarch64/appstream/source/SRPMS',
      'content/public/ubi/dist/ubi9/9/ppc64le/appstream/debug',
      'content/public/ubi/dist/ubi9/9/ppc64le/appstream/os',
      'content/public/ubi/dist/ubi9/9/ppc64le/appstream/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/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'
    ],
    'pkgs': [
      {'reference':'webkit2gtk3-2.54.0-1.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-2.54.0-1.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-2.54.0-1.el9_8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-2.54.0-1.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',
      'content/e6s/rhel9/9.8/aarch64/appstream/source/SRPMS',
      'content/e6s/rhel9/9.8/ppc64le/appstream/debug',
      'content/e6s/rhel9/9.8/ppc64le/appstream/os',
      'content/e6s/rhel9/9.8/ppc64le/appstream/source/SRPMS',
      'content/e6s/rhel9/9.8/s390x/appstream/debug',
      'content/e6s/rhel9/9.8/s390x/appstream/os',
      'content/e6s/rhel9/9.8/s390x/appstream/source/SRPMS',
      'content/e6s/rhel9/9.8/x86_64/appstream/debug',
      'content/e6s/rhel9/9.8/x86_64/appstream/os',
      'content/e6s/rhel9/9.8/x86_64/appstream/source/SRPMS',
      'content/eus/rhel9/9.8/aarch64/appstream/debug',
      'content/eus/rhel9/9.8/aarch64/appstream/os',
      'content/eus/rhel9/9.8/aarch64/appstream/source/SRPMS',
      'content/eus/rhel9/9.8/ppc64le/appstream/debug',
      'content/eus/rhel9/9.8/ppc64le/appstream/os',
      'content/eus/rhel9/9.8/ppc64le/appstream/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/x86_64/appstream/debug',
      'content/eus/rhel9/9.8/x86_64/appstream/os',
      'content/eus/rhel9/9.8/x86_64/appstream/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'webkit2gtk3-2.54.0-1.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-devel-2.54.0-1.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-2.54.0-1.el9_8', 'sp':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'webkit2gtk3-jsc-devel-2.54.0-1.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, 'webkit2gtk3 / webkit2gtk3-devel / webkit2gtk3-jsc / etc');
}

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21 Sep 2026 00:00Current
CVSS 3.18.8
EPSS0.00552
SSVC
3