A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00661.

Exploitation none

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
GNOME GLib unaffected
Version Status Constraints
0 affected < 2.88.1
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
0:2.70.1-9.el8_10 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 Red Hat OpenShift Container Platform 4.22 affected
Version Status Constraints
4.22.9.8.202609081748-0 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 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 9 affected —
Red Hat Red Hat Hardened Images unaffected —

Configuration 1 [-]

OR cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

To mitigate this vulnerability, ensure that applications only connect to trusted D-Bus servers and operate within secure, isolated networks to prevent man-in-the-middle (MitM) attacks. If feasible, configuring the D-Bus connection to strictly require the EXTERNAL authentication mechanism and disabling DBUS_COOKIE_SHA1 will completely neutralize this issue.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:49512 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/errata/RHSA-2026:66357 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-58015 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2492256 cve-icon cve-icon
https://gitlab.gnome.org/GNOME/glib/-/issues/3931 cve-icon cve-icon
History

Tue, 15 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4 cpe:/a:redhat:openshift:4.22::el9
References

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:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:8::baseos
References

Mon, 31 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift
CPEs cpe:/a:redhat:openshift:4
Vendors & Products Redhat openshift

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

Mon, 03 Aug 2026 05:30:00 +0000

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

Thu, 02 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-22

Wed, 01 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 01 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Gnome
Gnome glib
Redhat hardened Images
Vendors & Products Gnome
Gnome glib
Redhat hardened Images

Tue, 30 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-22

Tue, 30 Jun 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-22

Tue, 30 Jun 2026 13:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.
Title Glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
CPEs cpe:/a:redhat:hummingbird:1
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
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-15T11:37:22.569Z

Reserved: 2026-06-26T20:59:47.856Z

Link: CVE-2026-58015

cve-icon Vulnrichment

Updated: 2026-07-01T14:28:23.979Z

cve-icon NVD

Status : Modified

Published: 2026-06-30T13:19:17.707

Modified: 2026-09-15T12:17:51.643

Link: CVE-2026-58015

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T13:45:03Z

Weaknesses