Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Glib | < 2.88.1 |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:49512
- https://access.redhat.com/errata/RHSA-2026:55440
- https://access.redhat.com/errata/RHSA-2026:57015
- https://access.redhat.com/security/cve/CVE-2026-58015Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492256Issue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/glib/-/issues/3931ExploitIssue TrackingVendor Advisory
FAQ
What is CVE-2026-58015?
CVE-2026-58015 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 maliciou...
How severe is CVE-2026-58015?
CVE-2026-58015 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-58015?
Check the references section above for vendor advisories and patch information. Affected products include: Gnome Glib, Redhat Enterprise Linux.