Vulnerability Report

CVE-2026-58015

Title: GLib D-Bus Client SASL Auth Bypass

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2026-58015.

CWE Category NVD-CWE-noinfo

Published Date Jun 30, 2026

Modified Date Jul 23, 2026

Exploit Status Not Found

Score 5.9 CVSS v3.1

Exploit Probability (EPSS)

0.46%

Vulnerability Summary

CVE-2026-58015: 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.

Impacted Vendors

gnome 1

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.9

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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