{"id":"CVE-2026-48612","aliases":["EUVD-2026-36380","GHSA-575v-33q9-fpgm"],"status":"published","title":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the...","description":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.","severity":{"version":"3.0","score":8,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0012,"percentile":0.01869,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352"],"published":"2026-06-12T02:27:43Z","modified":"2026-06-17T10:55:09Z","products":[{"vendor":"phpbb","product":"phpbb"}],"references":[{"url":"https://www.phpbb.com/community/viewtopic.php?t=2672170"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48612"},{"url":"https://github.com/advisories/GHSA-575v-33q9-fpgm"}],"sources":{"cve":[{"id":"CVE-2026-48612","description":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.","status":"published","published":"2026-06-12T02:27:43.506Z","modified":"2026-06-12T14:35:26.012Z","cvss":[{"version":"3.0","score":8,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T13:50:49.872037Z"}],"euvd":[{"id":"EUVD-2026-36380","description":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.","status":"published","published":"2026-06-12T02:27:43Z","modified":"2026-06-12T14:35:26Z","cvss":[{"version":"3.0","score":8,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:43.577088Z"}],"ghsa":[{"id":"GHSA-575v-33q9-fpgm","title":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the...","description":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.","status":"published","published":"2026-06-12T06:33:20Z","modified":"2026-06-12T06:33:21Z","cvss":[{"version":"3.0","score":8,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T15:08:45.184845Z"}],"nvd":[{"id":"CVE-2026-48612","description":"Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.","status":"published","published":"2026-06-12T04:17:10.123Z","modified":"2026-06-17T10:55:09.517Z","cvss":[{"version":"3.0","score":8,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:12:23.846948Z"}]}}