{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/53013?format=json","vulnerability_id":"VCID-113c-txjs-17d6","summary":"Authorization bypass in Istio\nIn 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.\n\n### Specific Go Packages Affected\nistio.io/istio/pilot/pkg/security/authz/model/matcher","aliases":[{"alias":"CVE-2020-16844"},{"alias":"GHSA-82mm-ffjr-h86c"}],"fixed_packages":[],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/102496?format=json","purl":"pkg:rpm/redhat/servicemesh@1.1.7-1?arch=el8","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-113c-txjs-17d6"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/servicemesh@1.1.7-1%3Farch=el8"}],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16844.json","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16844.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-16844","reference_id":"","reference_type":"","scores":[{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51846","published_at":"2026-05-14T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51689","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51739","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51765","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51726","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51781","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51777","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51827","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51806","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51791","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51833","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.5184","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51821","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51771","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51735","published_at":"2026-05-07T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51684","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51778","published_at":"2026-05-09T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51741","published_at":"2026-05-11T12:55:00Z"},{"value":"0.00284","scoring_system":"epss","scoring_elements":"0.51766","published_at":"2026-05-12T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-16844"},{"reference_url":"https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c"},{"reference_url":"https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace"},{"reference_url":"https://github.com/istio/istio/releases","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/istio/istio/releases"},{"reference_url":"https://github.com/istio/istio/releases/tag/1.5.9","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/istio/istio/releases/tag/1.5.9"},{"reference_url":"https://github.com/istio/istio/releases/tag/1.6.8","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/istio/istio/releases/tag/1.6.8"},{"reference_url":"https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9"},{"reference_url":"https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8"},{"reference_url":"https://istio.io/latest/news/security/istio-security-2020-009","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://istio.io/latest/news/security/istio-security-2020-009"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16844","reference_id":"","reference_type":"","scores":[{"value":"6.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16844"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1861625","reference_id":"1861625","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1861625"},{"reference_url":"https://access.redhat.com/errata/RHSA-2020:3425","reference_id":"RHSA-2020:3425","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2020:3425"}],"weaknesses":[{"cwe_id":284,"name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor."}],"exploits":[],"severity_range_score":"4.0 - 6.9","exploitability":"0.5","weighted_severity":"6.2","risk_score":3.1,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-113c-txjs-17d6"}