Vulnerability record/PUBLISHED/Published Jun 30, 2026 13:02:45 UTC
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.
Base score5.9/ 10
SeverityMediumCVSS 3.1
Exploitability / impact
CVSS metric breakdown
Base severityMedium
Attack vectorNetworkAV
Attack complexityHighAC
Privileges requiredNonePR
User interactionNoneUI
ScopeUnchangedS
Confidentiality impactHighC
Integrity impactNoneI
Availability impactNoneA
CVSS vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering Authorityredhat
Last updatedOct 30, 2026 07:43:06 UTC
PublishedJun 30, 2026 13:02:45 UTC
ReservedJun 26, 2026 20:59:47 UTC
Credits
- Red Hat would like to thank Thepwnisher for reporting this issue.