CVE-2026-113496

NameCVE-2026-113496
DescriptionA flaw was found in cockpit-machines. When saving Virtual Network Computing (VNC) console settings, the configured password is passed directly as a command-line argument to an underlying system utility. A local unprivileged attacker on a host that allows cross-user process inspection could read the exposed password from the process list while another user modifies settings. This credential disclosure can allow unauthorized access to the guest virtual machine's graphical console.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1152783

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
cockpit-machines (PTS)bookworm288-1vulnerable
trixie332-1vulnerable
forky, sid360-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
cockpit-machinessource(unstable)360-11152783

Notes

[trixie] - cockpit-machines <no-dsa> (Minor issue)
[bookworm] - cockpit-machines <postponed> (Minor issue, can be mitigated and then fixed with next release)
https://bugzilla.redhat.com/show_bug.cgi?id=2556058
https://github.com/advisories/GHSA-vxhg-j5jv-qgqm
Fixed by: https://github.com/cockpit-project/cockpit-machines/commit/e0d400eb32ef806bfcdda701608f8dc222cec2ab

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