CVE-2026-58015

MEDIUM 5.9

Glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive

CVSS Score

5.9

EPSS Score

0.9%

EPSS Percentile

58th

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.

CWE	CWE-22
Vendor	gnome
Product	glib
Published	Jun 30, 2026
Last Updated	Sep 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

GNOME / GLib

0 < 2.88.1

Red Hat / Red Hat Enterprise Linux 10

All versions affected

Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

All versions affected

Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service

All versions affected

Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9

All versions affected

Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

All versions affected

Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support

All versions affected

Red Hat / Red Hat OpenShift Container Platform 4.22

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.19

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Cert Manager support for Red Hat OpenShift release 1.20

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected

Red Hat / Red Hat Discovery 2

All versions affected