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CVE-2026-58016

40
FAUCET Score

A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a <node> element nested within other elements like <method>, <signal>, <property> or <arg>. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.

First published: Jun 30, 2026Last modified: Jul 24, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 2.88.1CPE matchmatch criteria
cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 13th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: azl3 glib 2.78.6-9 on Azure Linux 3.0Fixed in: 2.78.6-10
microsoftpatch availablevia msrc
Product: 21513-17084Fixed in: 2.78.6-10

Vendor Advisories (1)

microsoft2026-Jun/CVE-2026-58016Moderate

Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

Jun 9, 2026

References

access.redhat.com / errata/RHSA-2026:42063
access.redhat.com / errata/RHSA-2026:42089
access.redhat.com / errata/RHSA-2026:42090
access.redhat.com / errata/RHSA-2026:44481
access.redhat.com / security/cve/CVE-2026-58016
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
gitlab.gnome.org / GNOME/glib/-/issues/3932
ExploitIssue TrackingThird Party Advisory