USN-8854-1: OpenStack Keystone vulnerabilities

Publication date

30 September 2026

Overview

Several security issues were fixed in OpenStack Keystone.


Packages

Details

Grzegorz Grasza discovered that OpenStack Keystone did not consistently
enforce restrictions for delegated authentication tokens. An authenticated
attacker could possibly use this issue to create credentials or delegations
that outlasted the delegated token. (CVE-2026-80182)

It was discovered that OpenStack Keystone incorrectly handled role
assignment queries under certain circumstances. An authenticated attacker
could possibly use this issue to obtain sensitive information. This
issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04
LTS, and Ubuntu 26.04 LTS. (CVE-2026-80183)

Tim Shephard discovered that OpenStack Keystone did not properly
restrict reauthentication using delegated tokens. An authenticated
attacker could possibly use this issue to escape their intended
project scope and obtain unauthorized access. (

Grzegorz Grasza discovered that OpenStack Keystone did not consistently
enforce restrictions for delegated authentication tokens. An authenticated
attacker could possibly use this issue to create credentials or delegations
that outlasted the delegated token. (CVE-2026-80182)

It was discovered that OpenStack Keystone incorrectly handled role
assignment queries under certain circumstances. An authenticated attacker
could possibly use this issue to obtain sensitive information. This
issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04
LTS, and Ubuntu 26.04 LTS. (CVE-2026-80183)

Tim Shephard discovered that OpenStack Keystone did not properly
restrict reauthentication using delegated tokens. An authenticated
attacker could possibly use this issue to escape their intended
project scope and obtain unauthorized access. (CVE-2026-80184)


Update instructions

After a standard system update you need to restart keystone to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute keystone –  2:29.0.0-0ubuntu1.4
24.04 LTS noble keystone –  2:25.0.0-0ubuntu1.6
22.04 LTS jammy keystone –  2:21.0.1-0ubuntu2.6
20.04 LTS focal keystone –  2:17.0.1-0ubuntu2+esm2  
18.04 LTS bionic keystone –  2:13.0.4-0ubuntu1+esm1  
16.04 LTS xenial keystone –  2:9.3.0-0ubuntu3.2+esm2  

Reduce your security exposure

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