Path Traversal in Gnome Glib
CVE-2026-58015
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (37.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
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 — versions 0:2.70.1-9.el8_10
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Exploit, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-58015?
- CVE-2026-58015 is a medium-severity vulnerability in Gnome Glib, classified under Path Traversal. CVSS score: 5.9/10. Published 2026-06-30.
- How severe is CVE-2026-58015?
- Medium severity. CVSS v3 base score is 5.9 out of 10.