{"cve":"CVE-2020-12689","nvd":{"published":"2020-05-07T00:15:10.877","modified":"2026-06-17T02:52:08.333","status":"Modified","description":"An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-269"],"references":["http://www.openwall.com/lists/oss-security/2020/05/07/2","https://bugs.launchpad.net/keystone/+bug/1872735","https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E","https://security.openstack.org/ossa/OSSA-2020-004.html","https://usn.ubuntu.com/4480-1/"],"products":["canonical:ubuntu_linux","openstack:keystone"],"source":"nvd","synced_at":"2026-10-19T21:04:18.695612450+00:00"},"epss":{"cve":"CVE-2020-12689","score":0.01562,"percentile":0.75263,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-chgw-36xv-47cw","url":"https://osv.dev/vulnerability/GHSA-chgw-36xv-47cw","summary":"OpenStack Keystone EC2 and/or credential endpoints are not protected from a scoped context ","modified":"2024-09-27T21:33:58.637036Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":["<15.0.1"],"fixed":["15.0.1"]},{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=16.0.0 <16.0.1"],"fixed":["16.0.1"]}]},{"id":"PYSEC-2020-53","url":"https://osv.dev/vulnerability/PYSEC-2020-53","summary":"","modified":"2026-06-10T17:01:55.520429033Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":["<15.0.1"],"fixed":["15.0.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}