{"id":"CVE-2021-34824","aliases":["EUVD-2021-21471","GHSA-m879-9xpq-ppwc"],"status":"published","title":"Istio before 1.9.6 and 1.10.x before 1.10.2 has Incorrect Access Control.","description":"Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01988,"percentile":0.80796,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-668"],"published":"2021-06-29T13:30:01Z","modified":"2026-10-20T10:54:45Z","exploits":[{"source":"pocgithub","id":"rsalmond/CVE-2021-34824","title":"rsalmond/CVE-2021-34824","date":"2022-12-23","url":"https://github.com/rsalmond/CVE-2021-34824"}],"products":[{"vendor":"istio","product":"istio"}],"references":[{"url":"https://github.com/istio/istio/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://istio.io/latest/news/security/istio-security-2021-007","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34824"},{"url":"https://github.com/advisories/GHSA-m879-9xpq-ppwc"}],"sources":{"cve":[{"id":"CVE-2021-34824","description":"Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.","status":"published","published":"2021-06-29T13:30:01Z","modified":"2024-08-04T00:26:54.057Z","updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21471","description":"Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.","status":"published","published":"2021-06-29T13:30:01Z","modified":"2024-08-04T00:26:54Z","updated_at":"2026-11-03T03:24:31.977228Z"}],"ghsa":[{"id":"GHSA-m879-9xpq-ppwc","title":"Istio before 1.9.6 and 1.10.x before 1.10.2 has Incorrect Access Control.","description":"Istio before 1.9.6 and 1.10.x before 1.10.2 has Incorrect Access Control.","status":"published","published":"2022-05-24T19:06:32Z","modified":"2023-01-27T05:02:51Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:42:06.943612Z"}],"nvd":[{"id":"CVE-2021-34824","description":"Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.","status":"published","published":"2021-06-29T14:15:08.5Z","modified":"2026-06-17T03:56:37.873Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-34824","description":"Istio (1.8.x, 1.9.0-1.9.5 and 1.10.0-1.10.1) contains a remotely exploitable vulnerability where credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.","status":"published","published":"2021-06-29T14:15:08.5Z","modified":"2026-10-20T10:54:45.562464112Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}