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    CVE-2026-15588

    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.

    Published:Jul 12, 2026
    Last Modified:Sep 10, 2026
    EPS:Jul 20, 2026
    EPSS Score:0.00225
    CVSS Score:5.3

    Affected Products

    Vendor
    Redhat
    Product
    Cert Manager
    Vendor
    Redhat
    Product
    Discovery
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Hardened Images
    Vendor
    Redhat
    Product
    Hummingbird
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Openshift Container Platform
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Eus Long Life
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Redhat
    Product
    Rhui

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-58015 (CVSS 5.9) — A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mec…
    CVE-2026-58014 (CVSS 7.3) — A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in t…
    CVE-2026-58013 (CVSS 6.5) — A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c…
    CVE-2026-58012 (CVSS 6.5) — A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_R…
    CVE-2026-58011 (CVSS 6.5) — A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function …
    CVE-2026-58010 (CVSS 6.5) — A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvaria…
    CVE-2025-8941 (CVSS 7.8) — A flaw was found in linux-pam. The pam_namespace module may improperly handle user-controlled paths, allowing …
    CVE-2025-7425 (CVSS 7.8) — A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts interna…
    CVE-2025-6020 (CVSS 7.8) — A flaw was found in linux-pam. The module pam_namespace may use access user-controlled paths without proper pr…
    CVE-2025-49796 (CVSS 9.1) — A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger…

    References

    https://access.redhat.com/errata/RHSA-2026:39985
    https://access.redhat.com/errata/RHSA-2026:40485
    https://access.redhat.com/errata/RHSA-2026:42329
    https://access.redhat.com/errata/RHSA-2026:55440
    https://access.redhat.com/errata/RHSA-2026:57015
    https://access.redhat.com/errata/RHSA-2026:58981
    https://access.redhat.com/errata/RHSA-2026:61766
    https://access.redhat.com/errata/RHSA-2026:61783
    https://access.redhat.com/errata/RHSA-2026:63135
    https://access.redhat.com/errata/RHSA-2026:63138
    https://access.redhat.com/errata/RHSA-2026:63140
    https://access.redhat.com/errata/RHSA-2026:65762
    https://access.redhat.com/errata/RHSA-2026:65763
    https://access.redhat.com/errata/RHSA-2026:65767
    https://access.redhat.com/errata/RHSA-2026:65768
    https://access.redhat.com/errata/RHSA-2026:65769
    https://access.redhat.com/errata/RHSA-2026:65770
    https://access.redhat.com/errata/RHSA-2026:65771
    https://access.redhat.com/errata/RHSA-2026:65773
    https://access.redhat.com/security/cve/CVE-2026-15588
    https://bugzilla.redhat.com/show_bug.cgi?id=2499675
    https://gitlab.gnome.org/GNOME/glib/-/issues/3985
    https://gitlab.gnome.org/GNOME/glib/-/issues/3985

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High