{"id":"CVE-2018-3822","aliases":["EUVD-2018-15610","GHSA-8x5v-8988-73v9"],"status":"published","title":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack...","description":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01601,"percentile":0.75949,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22","CWE-287"],"published":"2018-03-30T20:00:00Z","modified":"2026-06-17T01:57:50Z","products":[{"vendor":"elastic","product":"x-pack"},{"vendor":"elastic","product":"x-pack security"}],"references":[{"url":"https://discuss.elastic.co/t/elastic-stack-6-2-3-security-update/124848","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-3822"},{"url":"https://github.com/advisories/GHSA-8x5v-8988-73v9"}],"sources":{"cve":[{"id":"CVE-2018-3822","description":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.","status":"published","published":"2018-03-30T20:00:00Z","modified":"2024-08-05T04:57:23.752Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:35:05.262903Z"}],"euvd":[{"id":"EUVD-2018-15610","description":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.","status":"published","published":"2018-03-30T20:00:00Z","modified":"2024-08-05T04:57:23Z","updated_at":"2026-11-03T02:40:15.208866Z"}],"ghsa":[{"id":"GHSA-8x5v-8988-73v9","title":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack...","description":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.","status":"published","published":"2022-05-13T01:32:18Z","modified":"2023-02-01T05:08:27Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:50:46.174982Z"}],"nvd":[{"id":"CVE-2018-3822","description":"X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.","status":"published","published":"2018-03-30T20:29:00.49Z","modified":"2026-06-17T01:57:50.877Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287","CWE-22"],"updated_at":"2026-11-02T14:04:24.700429Z"}]}}