{"id":"CVE-2006-3204","aliases":["EUVD-2006-3201","GHSA-646v-pqqm-xw3h"],"status":"published","title":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a...","description":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a large key collision space, which allows remote attackers to determine a suitable decryption key given the plaintext and ciphertext by obtaining the plaintext password, which is sent when logging in, and the ciphertext, which is set in the pass_env cookie.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01845,"percentile":0.79201,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2006-06-24T01:00:00Z","modified":"2026-06-16T22:26:37Z","products":[{"vendor":"ultimate_php_board","product":"ultimate_php_board"}],"references":[{"url":"http://www.kliconsulting.com/users/mbrooks/UPB_0-day.txt","tags":["x_refsource_MISC","x_transferred","Exploit","URL Repurposed"]},{"url":"http://securityreason.com/securityalert/1138","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/437875/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-3204"},{"url":"https://github.com/advisories/GHSA-646v-pqqm-xw3h"}],"sources":{"cve":[{"id":"CVE-2006-3204","description":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a large key collision space, which allows remote attackers to determine a suitable decryption key given the plaintext and ciphertext by obtaining the plaintext password, which is sent when logging in, and the ciphertext, which is set in the pass_env cookie.","status":"published","published":"2006-06-24T01:00:00Z","modified":"2024-08-07T18:23:21.206Z","updated_at":"2026-11-02T14:33:49.62488Z"}],"euvd":[{"id":"EUVD-2006-3201","description":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a large key collision space, which allows remote attackers to determine a suitable decryption key given the plaintext and ciphertext by obtaining the plaintext password, which is sent when logging in, and the ciphertext, which is set in the pass_env cookie.","status":"published","published":"2006-06-24T01:00:00Z","modified":"2024-08-07T18:23:21Z","updated_at":"2026-11-03T01:15:57.220997Z"}],"ghsa":[{"id":"GHSA-646v-pqqm-xw3h","title":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a...","description":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a large key collision space, which allows remote attackers to determine a suitable decryption key given the plaintext and ciphertext by obtaining the plaintext password, which is sent when logging in, and the ciphertext, which is set in the pass_env cookie.","status":"published","published":"2022-05-01T07:06:43Z","modified":"2023-01-31T05:01:42Z","updated_at":"2026-11-02T14:48:06.842332Z"}],"nvd":[{"id":"CVE-2006-3204","description":"Ultimate PHP Board (UPB) 1.9.6 and earlier uses a cryptographically weak block cipher with a large key collision space, which allows remote attackers to determine a suitable decryption key given the plaintext and ciphertext by obtaining the plaintext password, which is sent when logging in, and the ciphertext, which is set in the pass_env cookie.","status":"published","published":"2006-06-24T01:06:00Z","modified":"2026-06-16T22:26:37.187Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:04.288594Z"}]}}