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CVE-2026-58015

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

Published: Jun 30, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-22
5.9MEDIUM
NVD MITRE
EPSS Score
0.5%
Top 62.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-22NVD-CWE-noinfo

Affected Products

Red Hat
commercial·USaka redhat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Hardened ImagesOn-premOS
Operating Systems / linux-distro
GNOME
oss-project·USaka glib, gnome project
GLibLibraryLibrary
OSS Libraries / generic-library
and 6 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-58015
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2492256
bugzilla.redhat.com
https://gitlab.gnome.org/GNOME/glib/-/issues/3931
gitlab.gnome.org

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