What is CVE-2026-58012?

CVE-2026-58012 is a medium-severity vulnerability in Gnome Glib, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-06-30.

How severe is CVE-2026-58012?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Gnome Glib

CVE-2026-58012

A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_REGEX_RAW` compile flag and case-change replacement escapes because the string_append function processes matched substrings using…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Gnome Glib — versions 0
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat Hardened Images

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
secalert@redhat.com

Frequently asked questions

What is CVE-2026-58012?: CVE-2026-58012 is a medium-severity vulnerability in Gnome Glib, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-06-30.
How severe is CVE-2026-58012?: Medium severity. CVSS v3 base score is 6.5 out of 10.