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CVE-2026-58016

CRITICALCVSS 9.1/10EPSS 0.56%

Last modified

CVE-2026-58016 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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`. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.1/10

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

EPSS Probability
0.56%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnomeGlib< 2.89.0
RedhatCert-Manager Operator>= 1.18.0, < 1.18.2
RedhatCert-Manager Operator1.17.0
RedhatCert-Manager Operator1.20.0
RedhatCodeready Linux Builder8.0
RedhatCodeready Linux Builder9.0
RedhatCodeready Linux Builder10.0
RedhatCodeready Linux Builder Eus9.6
RedhatCodeready Linux Builder Eus10.0
RedhatDiscovery2.0
RedhatInsights-Proxy1.5.0
RedhatOpenshift Ai>= 3.0, < 3.0.3
RedhatOpenshift Ai>= 3.2, < 3.2.3
RedhatOpenshift Ai>= 3.4, < 3.4.3
RedhatUpdate Infrastructure>= 5.0, < 5.2
RedhatEnterprise Linux6.0
RedhatEnterprise Linux8.0
RedhatEnterprise Linux9.0
RedhatEnterprise Linux10.0
RedhatEnterprise Linux Aus8.4
RedhatEnterprise Linux Aus8.6
RedhatEnterprise Linux Els7.0
RedhatEnterprise Linux Eus8.4
RedhatEnterprise Linux Eus8.6
RedhatEnterprise Linux Eus9.6
RedhatEnterprise Linux Eus10.0
RedhatEnterprise Linux Server Tus8.8
RedhatEnterprise Linux Update Services For Sap Solutions8.8
RedhatEnterprise Linux Update Services For Sap Solutions9.2
RedhatEnterprise Linux Update Services For Sap Solutions9.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2026-58016?
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.
How severe is CVE-2026-58016?
CVE-2026-58016 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.
How do I fix CVE-2026-58016?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST