CVE record · CVE-2026-58012

Glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char()

CVSS 6.5 MediumEPSS 0.0049 · 42nd percentile

Published by the CVE Program (CNA: redhat) at 30 Jun 2026, 12:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
GNOME	GLib Package name: GLib https://gitlab.gnome.org/GNOME/glib/	affected before 2.86.5 semver affected before 2.88.1 semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.80.4-12.el10_2.21 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.80.4-4.el10_0.17 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.1-13.el7_9.1 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: mingw-glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.70.1-9.el8_10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-177.el8_10 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-10.el8_4.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-10.el8_4.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-158.el8_6.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-158.el8_6.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-165.el8_8.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.56.4-165.el8_8.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.68.4-19.el9_8.9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.68.4-19.el9_8.9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.68.4-7.el9_2.7 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.68.4-14.el9_4.8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support Package name: glib2 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:2.68.4-16.el9_6.7 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.17 Package name: cert-manager/jetstack-cert-manager-acmesolver-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791371080 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.17 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791371069 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.17 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791788287 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.17 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791378395 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.17 Package name: cert-manager/cert-manager-operator-bundle https://catalog.redhat.com/software/containers/	unaffected 1791970484 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/jetstack-cert-manager-acmesolver-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459707 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459711 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1791459759 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1789029076 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.18 Package name: cert-manager/cert-manager-operator-bundle https://catalog.redhat.com/software/containers/	unaffected 1791966259 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.19 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1788348522 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.19 Package name: cert-manager/jetstack-cert-manager-acmesolver-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1788348571 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.19 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1788348571 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.19 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1788348594 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790223279 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790223719 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790272426 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/jetstack-cert-manager-acmesolver-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790589998 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/jetstack-cert-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790589912 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/cert-manager-istio-csr-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790589914 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/cert-manager-operator-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790589855 to before * rpm Other versions: affected
Red Hat	Cert Manager support for Red Hat OpenShift release 1.20 Package name: cert-manager/cert-manager-trust-manager-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790598593 to before * rpm Other versions: affected
Red Hat	Red Hat AI Inference Server 3.2 Package name: rhaiis/model-opt-cuda-rhel9 https://catalog.redhat.com/software/containers/	unaffected 1790621714 to before * rpm Other versions: affected

And 60 more products. The full list is on the CVE record.

Identifiers: CVE-2026-58012
CNA: redhat
Weakness (CWE): CWE-126
Tags: GNOME GLib
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
CWE-126
Published: 30 Jun 2026
Updated: 5 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0049, the 42nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

30 Jun 2026, 12:57 UTC Confirmed by the CVE List
30 Jun 2026, 13:19 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:49512 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:55440 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:57015 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:58981 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:61766 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:61783 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:63135 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:63138 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:63140 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65762 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65763 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65767 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65768 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65769 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65770 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65771 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:65773 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:66018 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72394 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72395 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72399 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72470 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72475 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72476 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:72502 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:73859 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:73909 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:73929 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:73930 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:73959 vendor-advisoryredhat

And 48 more on the CVE record.

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.