{
  "threat_severity" : "Moderate",
  "public_date" : "2026-07-12T10:10:00Z",
  "bugzilla" : {
    "description" : "GDBusServer: glib2: GDBusServer pre-authentication DoS via unbounded SASL line buffering",
    "id" : "2499675",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2499675"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-770",
  "details" : [ "A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.", "A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang." ],
  "statement" : "A flaw was found in the `GDBus` component of GLib. A local or remote unauthenticated attacker could send an engineered stream of data without line length limitations during the authentication process (`gdbusauth`), leading to excessive memory allocation and CPU consumption. This resource exhaustion can result in a denial-of-service (DoS) condition, causing applications or services dependent on GLib to become unstable or crash.",
  "acknowledgement" : "Red Hat would like to thank Gitee Codepecker Lab for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-08-19T00:00:00Z",
    "advisory" : "RHSA-2026:57015",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "glib2-0:2.80.4-12.el10_2.21"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-08-31T00:00:00Z",
    "advisory" : "RHSA-2026:61766",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "glib2-0:2.56.4-177.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-08-17T00:00:00Z",
    "advisory" : "RHSA-2026:55440",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "glib2-0:2.68.4-19.el9_8.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-08-17T00:00:00Z",
    "advisory" : "RHSA-2026:55440",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "glib2-0:2.68.4-19.el9_8.9"
  }, {
    "product_name" : "Cert Manager support for Red Hat OpenShift release 1.19",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:63135",
    "cpe" : "cpe:/a:redhat:cert_manager:1.19::el9",
    "package" : "cert-manager/cert-manager-operator-rhel9:1788348522"
  }, {
    "product_name" : "Cert Manager support for Red Hat OpenShift release 1.19",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:63138",
    "cpe" : "cpe:/a:redhat:cert_manager:1.19::el9",
    "package" : "cert-manager/jetstack-cert-manager-acmesolver-rhel9:1788348571"
  }, {
    "product_name" : "Cert Manager support for Red Hat OpenShift release 1.19",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:63138",
    "cpe" : "cpe:/a:redhat:cert_manager:1.19::el9",
    "package" : "cert-manager/jetstack-cert-manager-rhel9:1788348571"
  }, {
    "product_name" : "Cert Manager support for Red Hat OpenShift release 1.19",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:63140",
    "cpe" : "cpe:/a:redhat:cert_manager:1.19::el9",
    "package" : "cert-manager/cert-manager-istio-csr-rhel9:1788348594"
  }, {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-08-31T00:00:00Z",
    "advisory" : "RHSA-2026:61783",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-server-rhel9:1788205779"
  }, {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-08-31T00:00:00Z",
    "advisory" : "RHSA-2026:61783",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-ui-rhel9:1788206196"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-07-15T00:00:00Z",
    "advisory" : "RHSA-2026:39985",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "glib2-main-2.89.1-1.1.hum1",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-07-15T00:00:00Z",
    "advisory" : "RHSA-2026:40485",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "glib2-main-2.89.1-1.2.hum1",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-07-20T00:00:00Z",
    "advisory" : "RHSA-2026:42329",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "glib2-main-2.89.2-2.hum1",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-08-24T00:00:00Z",
    "advisory" : "RHSA-2026:58981",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/cds-kubernetes-tp-rhel9:1787241211"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-08-24T00:00:00Z",
    "advisory" : "RHSA-2026:58981",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/installer-tp-rhel9:1787135742"
  }, {
    "product_name" : "Red Hat Update Infrastructure 5",
    "release_date" : "2026-08-24T00:00:00Z",
    "advisory" : "RHSA-2026:58981",
    "cpe" : "cpe:/a:redhat:rhui:5::el9",
    "package" : "rhui5/rhua-tp-rhel9:1787241260"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Fix deferred",
    "package_name" : "mingw-glib2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Affected",
    "package_name" : "glib2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Affected",
    "package_name" : "glib2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "mingw-glib2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "mingw-glib2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift/ose-rhel-coreos-8",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift/ose-rhel-coreos-9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-15588\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-15588\nhttps://gitlab.gnome.org/GNOME/glib/-/issues/3985" ],
  "name" : "CVE-2026-15588",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}