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Vulnerability · Published Aug 26, 2026 · Assigned by mitre

CVE-2026-80183

High 7.1

In plain English

A high-severity type confusion in Keystone from OpenStack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.4%top 67.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In OpenStack Keystone before 29.0.3, any authenticated user holding role:reader on any project can list every project-scoped role assignment under any domain by passing a domain ID as scope.project.id with include_subtree to the GET /v3/role_assignments endpoint. The domain's project record has domain_id=null, causing the policy domain_id check to pass for any caller. With include_names, the response discloses the names and home-domain IDs of every user, group, project, and role involved. The literal "default" domain ID works against any deployment created with keystone-manage bootstrap. An attacker can harvest domain IDs from the response and repeat the query to map role assignments across the entire cloud. This is caused by misuse of "None" in  list_role_assignments_for_tree.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12keystone2:22.0.2-0+deb12u4DEBIAN-CVE-2026-80183
Debian:13keystone2:27.0.0-3+deb13u5DEBIAN-CVE-2026-80183
Debian:14keystone2:29.0.2-2DEBIAN-CVE-2026-80183
Ubuntu:22.04:LTSkeystone2:21.0.1-0ubuntu2.6UBUNTU-CVE-2026-80183
Ubuntu:22.04:LTSkeystone2:21.0.1-0ubuntu2.6USN-8854-1
Ubuntu:24.04:LTSkeystone2:25.0.0-0ubuntu1.6USN-8854-1
Ubuntu:24.04:LTSkeystone2:25.0.0-0ubuntu1.6UBUNTU-CVE-2026-80183
Ubuntu:26.04:LTSkeystone2:29.0.0-0ubuntu1.4USN-8854-1
Ubuntu:26.04:LTSkeystone2:29.0.0-0ubuntu1.4UBUNTU-CVE-2026-80183

Affected products (as reported)

VendorProductVersions
OpenStack Keystone 16.0.0 – before 27.0.328.0.0 – before 28.0.329.0.0 – before 29.0.3

Weakness: CWE-843 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

References