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.
https://bugzilla.redhat.com/show_bug.cgi?id=2492256
https://access.redhat.com/security/cve/CVE-2026-58015
https://access.redhat.com/errata/RHSA-2026:82888
https://access.redhat.com/errata/RHSA-2026:82857
https://access.redhat.com/errata/RHSA-2026:82415
https://access.redhat.com/errata/RHSA-2026:82372
https://access.redhat.com/errata/RHSA-2026:82371
https://access.redhat.com/errata/RHSA-2026:82368
https://access.redhat.com/errata/RHSA-2026:82354
https://access.redhat.com/errata/RHSA-2026:82347
https://access.redhat.com/errata/RHSA-2026:82336
https://access.redhat.com/errata/RHSA-2026:82322
https://access.redhat.com/errata/RHSA-2026:82304
https://access.redhat.com/errata/RHSA-2026:82066
https://access.redhat.com/errata/RHSA-2026:82061
https://access.redhat.com/errata/RHSA-2026:82059
https://access.redhat.com/errata/RHSA-2026:80771
https://access.redhat.com/errata/RHSA-2026:80769
https://access.redhat.com/errata/RHSA-2026:76042
https://access.redhat.com/errata/RHSA-2026:75660
https://access.redhat.com/errata/RHSA-2026:75659
https://access.redhat.com/errata/RHSA-2026:75658
https://access.redhat.com/errata/RHSA-2026:75657
https://access.redhat.com/errata/RHSA-2026:75655
https://access.redhat.com/errata/RHSA-2026:75654
https://access.redhat.com/errata/RHSA-2026:75652
https://access.redhat.com/errata/RHSA-2026:74771
https://access.redhat.com/errata/RHSA-2026:74688
https://access.redhat.com/errata/RHSA-2026:74687
https://access.redhat.com/errata/RHSA-2026:74685
https://access.redhat.com/errata/RHSA-2026:74683
https://access.redhat.com/errata/RHSA-2026:74681
https://access.redhat.com/errata/RHSA-2026:74679
https://access.redhat.com/errata/RHSA-2026:74678
https://access.redhat.com/errata/RHSA-2026:74677
https://access.redhat.com/errata/RHSA-2026:74674
https://access.redhat.com/errata/RHSA-2026:74463
https://access.redhat.com/errata/RHSA-2026:74462
https://access.redhat.com/errata/RHSA-2026:74461
https://access.redhat.com/errata/RHSA-2026:74460
https://access.redhat.com/errata/RHSA-2026:74459
https://access.redhat.com/errata/RHSA-2026:74458
https://access.redhat.com/errata/RHSA-2026:73962
https://access.redhat.com/errata/RHSA-2026:73961
https://access.redhat.com/errata/RHSA-2026:73960
https://access.redhat.com/errata/RHSA-2026:73959
https://access.redhat.com/errata/RHSA-2026:73930
https://access.redhat.com/errata/RHSA-2026:73929
https://access.redhat.com/errata/RHSA-2026:73909
https://access.redhat.com/errata/RHSA-2026:73866
https://access.redhat.com/errata/RHSA-2026:73859
https://access.redhat.com/errata/RHSA-2026:72502
https://access.redhat.com/errata/RHSA-2026:72476
https://access.redhat.com/errata/RHSA-2026:72475
https://access.redhat.com/errata/RHSA-2026:72470
https://access.redhat.com/errata/RHSA-2026:72399
https://access.redhat.com/errata/RHSA-2026:72395
https://access.redhat.com/errata/RHSA-2026:72394
https://access.redhat.com/errata/RHSA-2026:70646
https://access.redhat.com/errata/RHSA-2026:66357
https://access.redhat.com/errata/RHSA-2026:66018
https://access.redhat.com/errata/RHSA-2026:65773
https://access.redhat.com/errata/RHSA-2026:65771
https://access.redhat.com/errata/RHSA-2026:65770
https://access.redhat.com/errata/RHSA-2026:65769
https://access.redhat.com/errata/RHSA-2026:65768
https://access.redhat.com/errata/RHSA-2026:65767
https://access.redhat.com/errata/RHSA-2026:65763
https://access.redhat.com/errata/RHSA-2026:65762
https://access.redhat.com/errata/RHSA-2026:63140
https://access.redhat.com/errata/RHSA-2026:63138
https://access.redhat.com/errata/RHSA-2026:63135
https://access.redhat.com/errata/RHSA-2026:61783
https://access.redhat.com/errata/RHSA-2026:61766
https://access.redhat.com/errata/RHSA-2026:58981
https://access.redhat.com/errata/RHSA-2026:57015