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.
- Published Jun 30, 2026
- CVSS 7.5 high
- 0.9% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
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