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CVE-2026-111253

Dnf5daemon-server: dnf5: dnf5daemon-server: missing session-owner check allows foreign d-bus callers to replace another client's resolved transaction

6.6 Medium

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
High

Exploit likelihood

0.13%Unchanged since Nov 6, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.6

Dnf5daemon-server: dnf5: dnf5daemon-server: missing session-owner check allows foreign d-bus callers to replace another client's resolved transaction

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.

Record
CVE-2026-111253
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weakness
CWE-862
Updated
2026-11-05
EUVDEUVD-2026-117580 6.6

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.

Record
EUVD-2026-117580
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Updated
2026-11-05
GitHub AdvisoriesGHSA-pv76-vr6r-5vv5 6.6

A flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session...

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.

Record
GHSA-pv76-vr6r-5vv5
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weakness
CWE-862
Updated
2026-11-05
NVD 6.6

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.

Record
CVE-2026-111253
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weakness
CWE-862
Updated
2026-11-05
OSV 6.6

Dnf5daemon-server: dnf5: dnf5daemon-server: missing session-owner check allows foreign d-bus callers to replace another client's resolved transaction

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.

Record
CVE-2026-111253
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Weakness
CWE-862
Updated
2026-11-07
OSVDEBIAN-CVE-2026-111253 6.6

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.

Record
DEBIAN-CVE-2026-111253
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Updated
2026-11-06
OSVUBUNTU-CVE-2026-111253 6.6

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.

Record
UBUNTU-CVE-2026-111253
CVSS 3.1
6.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
Updated
2026-11-07

Affected products

Affected packages

Affected packages
PackageAffectedFixed
dnf5
Debian:14
All versions, plus listed versions
5.3.0.0-15.3.0.0-25.4.0.0-15.4.2.0-15.4.2.1-1
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5.4.3.0-15.4.4.0-15.4.5.0-15.4.6.0-15.4.6.0-2
None known
dnf
Ubuntu:22.04:LTS
All versions, plus listed versions
4.5.2-6
None known
dnf
Ubuntu:24.04:LTS
All versions, plus listed versions
4.14.0-44.14.0-4.14.14.0-4.1ubuntu1
None known
dnf
Ubuntu:26.10
All versions, plus listed versions
4.24.0-1build1
None known
dnf5
Ubuntu:26.10
All versions, plus listed versions
5.4.0.0-15.4.3.0-1
None known
dnf
Ubuntu:26.04:LTS
All versions, plus listed versions
4.23.0-14.24.0-14.24.0-1build1
None known
dnf5
Ubuntu:26.04:LTS
All versions, plus listed versions
5.4.0.0-1
None known

History

History
RecordedChangedSources
affected, aliases, referencesOSV
affected, aliases, referencesOSV
referencesEUVD, NVD, OSV
aliases, referencesGitHub Advisories
aliases, publishedEUVD
first indexedCVE List

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-111253 is a medium vulnerability (CVSS 6.6) in Red Hat Hardened Images, published November 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.

References

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