UBUNTU-CVE-2026-33997

HIGH8.1

Published Mar 31, 2026

Modified 3 days ago

Details

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows plugins privilege validation to be bypassed during docker plugin install. Due to an error in the daemon's privilege comparison logic, the daemon may incorrectly accept a privilege set that differs from the one approved by the user. Plugins that request exactly one privilege are also affected, because no comparison is performed at all. This issue has been patched in version 29.3.1.

Affected Packages(12 packages)

docker.io

Ubuntu 25.10

Affected versions:

26.1.5+dfsg1-9ubuntu1

docker.io-app

Ubuntu 25.10

Affected versions:

27.5.1-0ubuntu327.5.1-0ubuntu428.2.2-0ubuntu129.1.3-0ubuntu3~25.10.1

docker.io

Ubuntu 26.04

Affected versions:

26.1.5+dfsg1-9ubuntu127.5.1+dfsg4-1ubuntu127.5.1+dfsg4-2ubuntu1

docker.io-app

Ubuntu 26.04

Affected versions:

28.2.2-0ubuntu129.1.2-0ubuntu129.1.3-0ubuntu129.1.3-0ubuntu229.1.3-0ubuntu329.1.3-0ubuntu4

docker.io

Ubuntu Pro 16.04 LTS

Affected versions:

1.10.2-0ubuntu31.10.2-0ubuntu41.10.3-0ubuntu11.10.3-0ubuntu41.10.3-0ubuntu51.10.3-0ubuntu61.11.2-0ubuntu5~16.041.12.1-0ubuntu13~16.04.11.12.3-0ubuntu4~16.04.21.12.6-0ubuntu1~16.04.1+14 more

docker.io

Ubuntu Pro 18.04 LTS

Affected versions:

1.13.1-0ubuntu617.03.2-0ubuntu117.03.2-0ubuntu317.03.2-0ubuntu517.12.1-0ubuntu118.06.1-0ubuntu1.2~18.04.118.06.1-0ubuntu1~18.04.118.09.2-0ubuntu1~18.04.118.09.5-0ubuntu1~18.04.218.09.7-0ubuntu1~18.04.1+17 more

docker.io

Ubuntu Pro 20.04 LTS

Affected versions:

19.03.2-0ubuntu119.03.6-0ubuntu119.03.8-0ubuntu119.03.8-0ubuntu1.20.0419.03.8-0ubuntu1.20.04.119.03.8-0ubuntu1.20.04.220.10.12-0ubuntu2~20.04.120.10.2-0ubuntu1~20.04.220.10.2-0ubuntu1~20.04.320.10.21-0ubuntu1~20.04.1+10 more

docker.io-app

Ubuntu Pro 20.04 LTS

Affected versions:

20.10.25-0ubuntu1~20.04.120.10.25-0ubuntu1~20.04.224.0.5-0ubuntu1~20.04.124.0.7-0ubuntu2~20.04.126.1.3-0ubuntu1~20.04.126.1.3-0ubuntu1~20.04.1+esm1

docker.io

Ubuntu Pro 22.04 LTS

Affected versions:

20.10.12-0ubuntu120.10.12-0ubuntu220.10.12-0ubuntu320.10.12-0ubuntu3+gke1.24.120.10.12-0ubuntu420.10.21-0ubuntu1~22.04.220.10.21-0ubuntu1~22.04.320.10.21-0ubuntu1~22.04.520.10.21-0ubuntu1~22.04.620.10.21-0ubuntu1~22.04.7+6 more

docker.io-app

Ubuntu Pro 22.04 LTS

Affected versions:

20.10.25-0ubuntu1~22.04.120.10.25-0ubuntu1~22.04.224.0.5-0ubuntu1~22.04.124.0.7-0ubuntu2~22.04.126.1.3-0ubuntu1~22.04.126.1.3-0ubuntu1~22.04.1+esm127.5.1-0ubuntu3~22.04.127.5.1-0ubuntu3~22.04.228.2.2-0ubuntu1~22.04.129.1.3-0ubuntu3~22.04.1

References

REPORT

https://github.com/moby/moby/releases/tag/docker-v29.3.1

REPORT

https://github.com/moby/moby/security/advisories/GHSA-pxq6-2prw-chj9

REPORT

https://ubuntu.com/security/CVE-2026-33997

REPORT

https://www.cve.org/CVERecord?id=CVE-2026-33997

CVSS Analysis

CVSS v3.1

Exploitability