Medium 5.9Published Jun 30, 2026

CVE-2026-58015Glib: path traversal in glib/gio/gdbusauthmechanismsha1.c via keyring_lookup_entry and mechanism_client_data_receive

Updated under an hour ago (Oct 27, 2026, 6:40 AM ET)

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It affects GNOME GLib and 15 other products. Add what you run to find out whether that includes you.

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Every CVE for GNOME GLib

Exploited in the last 30 days

A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-22
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 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

GNOME GLib gnome:glib (from the name)	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
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support redhat:rhel_els	from 0:2.56.1-13.el7_9.1 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_aus	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
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_e4s	from 0:2.56.4-165.el8_8.2 not affected	CNA record
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service redhat:rhel_tus	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 Red Hat OpenShift Container Platform 4.12 redhat:openshift	from 412.86.202609171314-0 not affected	CNA record
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References

References

https://access.redhat.com/errata/RHSA-2026:49512	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:55440	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:57015	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:58981	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:61766	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:61783	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:63135	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:63138	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:63140	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:65762	vendor-advisory, x-refsource-redhat
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.