{"action":"Upgrade keystone to 27.0.2 or later.","affected":[{"fixed":"27.0.2","introduced":"14.0.0"},{"fixed":"28.0.2","introduced":"28.0.0"},{"fixed":"29.0.2","introduced":"29.0.0"}],"component":"keystone","cve_ids":["CVE-2026-42998"],"ecosystem":"PyPI","epss":0.00303,"exploited":false,"fixed_versions":["27.0.2","28.0.2","29.0.2"],"ghsa_id":"GHSA-8f8m-wrvr-wcvf","id":"tcs_01M5KF8187S3QX2V5T0BGR6CJ1","modified_at":"2026-09-10T03:51:04.955577631Z","published_at":"2026-05-28T21:32:02Z","references":["https://osv.dev/vulnerability/GHSA-8f8m-wrvr-wcvf","https://nvd.nist.gov/vuln/detail/CVE-2026-42998","https://bugs.launchpad.net/keystone/+bug/2148477","https://github.com/openstack/keystone","https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2026-599.yaml","https://security.openstack.org/ossa/OSSA-2026-015.html"],"severity":{"label":"medium","score":6},"sources":[{"source":"osv","source_id":"GHSA-8f8m-wrvr-wcvf","url":"https://osv.dev/vulnerability/GHSA-8f8m-wrvr-wcvf"}],"summary":"OpenStack Keystone doesn't verify that the user supplied in the authentication request matches the owner of the application credential"}