HIGH

CVE-2026-58016

CVSS v3

7.5

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-10-17

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

glib2AlmaLinux:10all versions · fixed in 2.80.4-12.el10_2.14and 4 other packages
glib2AlmaLinux:9all versions · fixed in 2.68.4-19.el9_8.2and 4 other packages
glib2AlmaLinux:8all versions · fixed in 2.56.4-170.el8_10and 5 other packages
mingw32-glib2AlmaLinux:8all versions · fixed in 2.70.1-9.el8_10and 3 other packages

Vendor advisories

CVE-2026-58016 Red Hat Product Security751 products fixed · 15 known affected
glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
mingw-glib2.src as a component of Red Hat Enterprise Linux 10 · mingw32-glib2 as a component of Red Hat Enterprise Linux 10 · mingw32-glib2-static as a component of Red Hat Enterprise Linux 10
RHSA-2026:82888 Red Hat Product Security1 product fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
RHSA-2026:82857 Red Hat Product Security1 product fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.18.2
RHSA-2026:82336 Red Hat Product Security4 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.1
RHSA-2026:82322 Red Hat Product Security4 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2
RHSA-2026:82304 Red Hat Product Security8 products fixed
Red Hat Security Advisory: cert-manager Operator for Red Hat OpenShift 1.17.2

35 more advisories

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-06-30
Last Modified: 2026-07-01
MSRC Title: Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"

Frequently asked questions

What is CVE-2026-58016?

Is CVE-2026-58016 actively exploited?

Active exploitation of CVE-2026-58016 has not been confirmed. Its EPSS score was 0.5% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-58016?

CVE-2026-58016 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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