{"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_01M5KHCCFR2K68APWHYGXWE0QV","modified_at":"2026-07-13T16:45:04.873671682Z","published_at":"2026-05-28T19:16:37.483Z","references":["https://osv.dev/vulnerability/PYSEC-2026-599","https://bugs.launchpad.net/keystone/+bug/2148477","https://security.openstack.org/ossa/OSSA-2026-015.html","https://github.com/advisories/GHSA-8f8m-wrvr-wcvf"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"PYSEC-2026-599","url":"https://osv.dev/vulnerability/PYSEC-2026-599"}],"summary":"An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone application credential authentication plugin does not verify that the user supplied in the authentication request matches the"}