{"id":"CVE-2020-16844","details":"In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.","aliases":["GHSA-82mm-ffjr-h86c"],"modified":"2026-04-11T20:33:28.992694Z","published":"2020-10-01T17:15:13.150Z","references":[{"type":"ADVISORY","url":"https://github.com/istio/istio/releases"},{"type":"EVIDENCE","url":"https://istio.io/latest/news/security/istio-security-2020-009/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/istio/istio","events":[{"introduced":"c3c353285578eb68b334fc8766746b754b6b3789"},{"last_affected":"80f49905d9108c11f327d7eb683ec184b96bc84e"},{"introduced":"df8ea82bf434fece015767579ef2e4a16e6a3fb3"},{"last_affected":"2511ab8c8c59a203e77bb804846593c3690fcf4a"}],"database_specific":{"extracted_events":[{"introduced":"1.5.0"},{"last_affected":"1.5.8"},{"introduced":"1.6.0"},{"last_affected":"1.6.7"}],"cpe":"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"versions":["1.5.0","1.5.2","1.5.3","1.5.4","1.5.6","1.5.8","1.6.0","1.6.1","1.6.3","1.6.5","1.6.6","1.6.7"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-16844.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}