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CVE-2026-58016

Gnome Glib integer overflow

7.5 HIGHPublic exploitEPSS 0.55%
  1. Published30 Jun 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Gnome Glib< 2.88.1
Redhat Enterprise Linux10.0 · 6.0 · 7.0 · 8.0

Remediation

Fixed in
Gnome Glib≥ 2.88.1

References

and 28 more references

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Frequently asked

Is CVE-2026-58016 being actively exploited?

CVE-2026-58016 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.55%.

How severe is CVE-2026-58016?

CVE-2026-58016 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.55% probability of exploitation.

Which products are affected by CVE-2026-58016?

Affected products include Gnome Glib, Redhat Enterprise Linux.

How do I fix CVE-2026-58016?

Upgrade affected software to a fixed version, for example Gnome Glib 2.88.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.