CVE-2026-58016
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.5%
44.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-191
Published 2026-06-30 · modified 2026-08-25
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-06-30 — Published (NVD)
- 2026-08-25 — Last modified (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.
Affected
References
- https://access.redhat.com/errata/RHSA-2026:42063
- https://access.redhat.com/errata/RHSA-2026:42089
- https://access.redhat.com/errata/RHSA-2026:42090
- https://access.redhat.com/errata/RHSA-2026:44481
- https://access.redhat.com/errata/RHSA-2026:46836
- https://access.redhat.com/errata/RHSA-2026:49512
- https://access.redhat.com/errata/RHSA-2026:51175
- https://access.redhat.com/errata/RHSA-2026:51176
- https://access.redhat.com/errata/RHSA-2026:51177
- https://access.redhat.com/errata/RHSA-2026:51181
- https://access.redhat.com/errata/RHSA-2026:51182
- https://access.redhat.com/errata/RHSA-2026:51183
- https://access.redhat.com/errata/RHSA-2026:51184
- https://access.redhat.com/errata/RHSA-2026:51185
- https://access.redhat.com/errata/RHSA-2026:53371
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/security/cve/CVE-2026-58016
- https://bugzilla.redhat.com/show_bug.cgi?id=2492257
- exploit https://gitlab.gnome.org/GNOME/glib/-/issues/3932