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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00225.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat Enterprise Linux 10 affected
Version Status Constraints
0:2.80.4-12.el10_2.21 unaffected < *
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support affected
Version Status Constraints
0:2.80.4-4.el10_0.17 unaffected < *
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support affected
Version Status Constraints
0:2.56.1-13.el7_9.1 unaffected < *
Red Hat Red Hat Enterprise Linux 8 affected
Version Status Constraints
0:2.56.4-177.el8_10 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support affected
Version Status Constraints
0:2.56.4-10.el8_4.7 unaffected < *
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On affected
Version Status Constraints
0:2.56.4-10.el8_4.7 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support affected
Version Status Constraints
0:2.56.4-158.el8_6.7 unaffected < *
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On affected
Version Status Constraints
0:2.56.4-158.el8_6.7 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service affected
Version Status Constraints
0:2.56.4-165.el8_8.2 unaffected < *
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions affected
Version Status Constraints
0:2.56.4-165.el8_8.2 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:2.68.4-19.el9_8.9 unaffected < *
Red Hat Red Hat Enterprise Linux 9 affected
Version Status Constraints
0:2.68.4-19.el9_8.9 unaffected < *
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions affected
Version Status Constraints
0:2.68.4-7.el9_2.7 unaffected < *
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions affected
Version Status Constraints
0:2.68.4-14.el9_4.8 unaffected < *
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support affected
Version Status Constraints
0:2.68.4-16.el9_6.7 unaffected < *
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 affected
Version Status Constraints
1788348522 unaffected < *
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 affected
Version Status Constraints
1788348571 unaffected < *
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 affected
Version Status Constraints
1788348571 unaffected < *
Red Hat Cert Manager support for Red Hat OpenShift release 1.19 affected
Version Status Constraints
1788348594 unaffected < *
Red Hat Red Hat Discovery 2 affected
Version Status Constraints
1788205779 unaffected < *
Red Hat Red Hat Discovery 2 affected
Version Status Constraints
1788206196 unaffected < *
Red Hat Red Hat Hardened Images affected
Version Status Constraints
2.89.1-1.1.hum1 unaffected < *
Red Hat Red Hat Hardened Images affected
Version Status Constraints
2.89.1-1.2.hum1 unaffected < *
Red Hat Red Hat Hardened Images affected
Version Status Constraints
2.89.2-2.hum1 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1787241211 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1787135742 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1787241260 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1788880445 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1788880464 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1788880456 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1788765051 unaffected < *
Red Hat Red Hat Update Infrastructure 5 affected
Version Status Constraints
1788880581 unaffected < *
Red Hat Red Hat Enterprise Linux 10 affected —
Red Hat Red Hat Enterprise Linux 6 affected —
Red Hat Red Hat Enterprise Linux 8 affected —
Red Hat Red Hat Enterprise Linux 9 affected —
Red Hat Red Hat OpenShift Container Platform 4 affected —
Red Hat Red Hat OpenShift Container Platform 4 affected —

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

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.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:39985 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:40485 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:42329 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:55440 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:57015 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:58981 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:61766 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:61783 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63135 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63138 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63140 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65762 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65763 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65767 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65768 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65769 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65770 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65771 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65773 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:66018 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-15588 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2499675 cve-icon cve-icon
https://gitlab.gnome.org/GNOME/glib/-/issues/3985 cve-icon cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-15588 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-15588 cve-icon
History

Thu, 10 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
References

Wed, 09 Sep 2026 08:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
Redhat rhel Eus
Redhat rhel Tus
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/a:redhat:rhel_eus:9.6::crb
cpe:/o:redhat:enterprise_linux_eus:10.0
cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.8::baseos
cpe:/o:redhat:rhel_eus:9.6::baseos
cpe:/o:redhat:rhel_eus_long_life:8.6::baseos
cpe:/o:redhat:rhel_tus:8.8::baseos
Vendors & Products Redhat enterprise Linux Eus
Redhat rhel Eus
Redhat rhel Tus
References

Wed, 09 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/a:redhat:rhel_e4s:9.4::appstream
cpe:/o:redhat:rhel_e4s:9.2::baseos
cpe:/o:redhat:rhel_e4s:9.4::baseos
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel E4s
Redhat rhel Els
References

Wed, 09 Sep 2026 03:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Eus Long Life
CPEs cpe:/o:redhat:rhel_aus:8.4::baseos
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
Vendors & Products Redhat rhel Aus
Redhat rhel Eus Long Life
References

Tue, 08 Sep 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat cert Manager
CPEs cpe:/a:redhat:cert_manager:1.19::el9
Vendors & Products Redhat cert Manager
References

Tue, 01 Sep 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat discovery
CPEs cpe:/a:redhat:discovery:2::el9
Vendors & Products Redhat discovery
References

Mon, 31 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::crb
cpe:/o:redhat:enterprise_linux:8::baseos
References

Tue, 25 Aug 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhui
CPEs cpe:/a:redhat:rhui:5::el9
Vendors & Products Redhat rhui
References

Wed, 19 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10.2
References

Mon, 17 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/a:redhat:enterprise_linux:9::crb
cpe:/o:redhat:enterprise_linux:9::baseos
References

Sun, 02 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hardened Images
Redhat openshift Container Platform
Vendors & Products Redhat hardened Images
Redhat openshift Container Platform

Tue, 21 Jul 2026 11:45:00 +0000

Type Values Removed Values Added
References

Tue, 21 Jul 2026 10:15:00 +0000

Type Values Removed Values Added
References

Tue, 21 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Moderate

Mon, 20 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 20 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-770
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-10T17:23:30.855Z

Reserved: 2026-07-13T13:21:08.322Z

Link: CVE-2026-15588

cve-icon Vulnrichment

Updated: 2026-07-20T13:49:53.438Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-07-20T12:17:55.220

Modified: 2026-09-10T18:17:56.303

Link: CVE-2026-15588

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-12T10:10:00Z

Links: CVE-2026-15588 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T20:35:49Z

Weaknesses