Description
A flaw was found in dnf5daemon-server. Unauthenticated D-Bus methods pass caller-controlled URL or .rpm path patterns into a root-privileged cmdline package loader that may store fetched content in a world-readable cache without size limits, or open local paths as root, allowing a local attacker to disclose privileged content and to deny service via disk exhaustion.
Published: 2026-11-13
Score: 8.4 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

Vendor Workaround

Until a fixed package is available, remove or disable dnf5daemon-server if GNOME Software / dnf5daemon-client is not required, or restrict system D-Bus access to org.rpm.dnf.v0 to trusted users. If non-root access to instance metadata is already blocked on a cloud host, also ensure the daemon cannot be used as a bypass, or disable the daemon. If exploitation cannot be ruled out, rotate exposed secrets (SSH host keys, service credentials, cloud role credentials where applicable) in addition to clearing /var/cache/dnf5daemon-server.

Tracking

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Advisories

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History

Fri, 13 Nov 2026 17:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in dnf5daemon-server. Unauthenticated D-Bus methods pass caller-controlled URL or .rpm path patterns into a root-privileged cmdline package loader that may store fetched content in a world-readable cache without size limits, or open local paths as root, allowing a local attacker to disclose privileged content and to deny service via disk exhaustion.
Title Dnf5: dnf5daemon-server: dnf5daemon-server: unauthenticated privileged cmdline package fetch/open via add_cmdline_packages
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': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H'}


Subscriptions

Redhat Hummingbird
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-13T20:02:51.232Z

Reserved: 2026-11-05T16:47:08.999Z

Link: CVE-2026-123177

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-13T18:17:30.780

Modified: 2026-11-13T20:18:15.640

Link: CVE-2026-123177

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses