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Medium 6.5Published Jun 30, 2026
CVE-2026-58012Glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char()
Updated under an hour ago ()
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It affects GNOME GLib and 14 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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 UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- Weakness (CWE)
- CWE-126
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GNOME GLib gnome:glib (from the name) | before 2.86.5; before 2.88.1 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:2.80.4-12.el10_2.21 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:2.80.4-4.el10_0.17 not affected | CNA record |
from 0:2.56.1-13.el7_9.1 not affected | CNA record | |
from 0:2.56.4-10.el8_4.7 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 0:2.56.4-10.el8_4.7 not affected | CNA record |
from 0:2.56.4-165.el8_8.2 not affected | CNA record | |
from 0:2.56.4-165.el8_8.2 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 0:2.68.4-16.el9_6.7 not affected | CNA record |
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 redhat:cert_manager | from 1791371080 not affected | CNA record |
Red Hat Red Hat AI Inference Server 3.2 redhat:ai_inference_server | from 1790621714 not affected | CNA record |
Red Hat Red Hat Discovery 2 redhat:discovery | from 1788205779 not affected | CNA record |
Red Hat Red Hat OpenShift AI 3.0 redhat:openshift_ai | from 1790276886 not affected | CNA record |
Red Hat Red Hat Update Infrastructure 5 redhat:rhui | from 1787241211 not affected | CNA record |
Red Hat Red Hat Hardened Images redhat:hummingbird | 1 | CNA record |
gnome glib gnome:glib | before 2.86.5; 2.88.0 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 6.0; 7.0; 8.0; 9.0; 10.0 | NVD |
References
- https://access.redhat.com/errata/RHSA-2026:49512vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:55440vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:57015vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:58981vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:61766vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:61783vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:63135vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:63138vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:63140vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65762vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65763vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65767vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65768vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65769vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65770vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65771vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:65773vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:66018vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72394vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72395vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72399vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72470vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72475vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72476vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:72502vendor-advisory, x-refsource-redhat
The CVE record on cve.org NVD's entry
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