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CVE-2026-121885

Podman: untrusted image labels allow auto-update to restart arbitrary systemd units

6.5 Medium

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.38%Unchanged since Nov 11, 2026
90%50%10%1%

What each source reports

CVE List Score used6.5

Podman: untrusted image labels allow auto-update to restart arbitrary systemd units

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
CVE-2026-121885
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-807
Updated
2026-11-11
EUVDEUVD-2026-1211476.5

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
EUVD-2026-121147
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-11
GitHub AdvisoriesGHSA-7fhf-8vg3-7vrp6.5

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a...

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
GHSA-7fhf-8vg3-7vrp
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-807
Updated
2026-11-11
NVD6.5

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
CVE-2026-121885
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-807
Updated
2026-11-11
OSVAZL-113342No score

CVE-2026-121885 affecting package podman 5.6.1-10

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
AZL-113342
Updated
2026-11-12
OSVUBUNTU-CVE-2026-121885No score

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

Record
UBUNTU-CVE-2026-121885
Updated
2026-11-13

Affected products

Affected packages

Affected packages
PackageAffectedFixed
podman
Azure Linux:3
through 5.6.1-10None known
podman
Ubuntu:26.10
All versions, plus listed versions
5.7.0+ds2-3build15.8.3+ds1-15.8.4+ds1-15.8.6+ds1-2
None known
podman
Ubuntu:26.04:LTS
All versions, plus listed versions
5.4.2+ds1-25.7.0+ds2-35.7.0+ds2-3build1
None known

History

History
RecordedChangedSources
affected, aliases, referencesOSV
affected, aliases, referencesCVE List, GitHub Advisories, NVD, OSV
referencesEUVD, NVD
publishedEUVD
publishedEUVD
aliases, referencesGitHub Advisories
cwes, products, references, severity, titleCVE List
first indexedEUVD

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

In short

CVE-2026-121885 is a medium vulnerability (CVSS 6.5) in Red Hat Enterprise Linux 10, published November 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.

References

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