Out-of-Bounds Read Vulnerability in GLib Affects Users of GDateTime
CVE-2026-58011

6.5MEDIUM

Key Information:

Vendor

Gnome
Status
Glib
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Vendor
CVE Published:
30 June 2026

What is CVE-2026-58011?

An out-of-bounds read vulnerability exists in the GLib library affecting the GDateTime data structure. Specifically, when an invalid GDateTime object is generated using the g_date_time_add_full function, it can lead to an out-of-bounds read of 2 bytes during processing by the g_date_time_get_ymd function. This flaw can corrupt the output of date values and may trigger logic errors within applications, potentially resulting in service disruption or instability.

Affected Version(s)

GLib 0 < 2.86.5

GLib 0 < 2.88.1

References

https://access.redhat.com/security/cve/CVE-2026-58011
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492245
issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/glib/-/issues/3917

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank linhlhq for reporting this issue.
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