Description
A flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session objects do not verify that the caller is the unique sender that created the session. A local attacker can modify another user's live package-management session and replace its resolved transaction plan. If the legitimate session party later authorizes execution, the root daemon may apply the attacker-chosen package operations.
Published: 2026-11-05
Score: 6.6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Until a fixed build is available, avoid leaving interactive dnf5daemon sessions open on multi-user systems where untrusted local accounts can access the system bus, and close sessions promptly after use.

Tracking

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Advisories

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History

Fri, 06 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Nov 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hardened Images
Vendors & Products Redhat hardened Images

Fri, 06 Nov 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 05 Nov 2026 16:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session objects do not verify that the caller is the unique sender that created the session. A local attacker can modify another user's live package-management session and replace its resolved transaction plan. If the legitimate session party later authorizes execution, the root daemon may apply the attacker-chosen package operations.
Title Dnf5daemon-server: dnf5: dnf5daemon-server: missing session-owner check allows foreign d-bus callers to replace another client's resolved transaction
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-862
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H'}


Subscriptions

Redhat Hardened Images Hummingbird
cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published:

Updated: 2026-11-05T16:46:26.191Z

Reserved: 2026-10-15T18:47:28.929Z

Link: CVE-2026-111253

cve-icon Vulnrichment

Updated: 2026-11-05T16:44:56.178Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-05T17:17:37.623

Modified: 2026-11-05T17:17:37.763

Link: CVE-2026-111253

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-05T14:19:18Z

Links: CVE-2026-111253 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T09:15:14Z

Weaknesses