Vulnerability · Published Sep 11, 2026 · Assigned by mitre
CVE-2026-90460
High 7.6
In plain English
A high-severity incorrect authorization in Keystone from OpenStack. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in OpenStack Keystone before 29.0.3. Tokens obtained via delegated authentication methods (EC2 credentials, application credentials, OAuth1 access tokens, and trusts) are not blocked from creating, modifying, or deleting credentials via the /v3/credentials API. EC2-derived tokens can additionally read credential blobs, exposing TOTP MFA seeds and other secrets. Also, PATCH /v3/credentials does not validate the requested post-update project_id, allowing any delegated token to move a credential to an unauthorized project. All Keystone deployments using delegated authentication are affected.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | keystone | 2:22.0.2-0+deb12u5 | DEBIAN-CVE-2026-90460 |
| Debian:13 | keystone | 2:27.0.0-3+deb13u6 | DEBIAN-CVE-2026-90460 |
| Debian:14 | keystone | 2:30.0.0~rc1-1 | DEBIAN-CVE-2026-90460 |
| Ubuntu:22.04:LTS | keystone | no fix listed | UBUNTU-CVE-2026-90460 |
| Ubuntu:24.04:LTS | keystone | no fix listed | UBUNTU-CVE-2026-90460 |
| Ubuntu:26.04:LTS | keystone | no fix listed | UBUNTU-CVE-2026-90460 |
| Ubuntu:26.10 | keystone | no fix listed | UBUNTU-CVE-2026-90460 |
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N