{"id":"CVE-2016-2564","aliases":["EUVD-2016-3638","GHSA-w6pf-cx8p-259q"],"status":"published","title":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying...","description":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01273,"percentile":0.70042,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-331"],"published":"2017-04-23T15:00:00Z","modified":"2026-06-17T00:44:18Z","products":[{"vendor":"invisioncommunity","product":"invision_power_board"}],"references":[{"url":"https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://invisionpower.com/release-notes/419-r37/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-2564"},{"url":"https://medium.com/@iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9"},{"url":"https://invisionpower.com/release-notes/419-r37"},{"url":"https://github.com/advisories/GHSA-w6pf-cx8p-259q"}],"sources":{"cve":[{"id":"CVE-2016-2564","description":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.","status":"published","published":"2017-04-23T15:00:00Z","modified":"2024-08-05T23:32:20.962Z","updated_at":"2026-11-02T14:33:33.07583Z"}],"euvd":[{"id":"EUVD-2016-3638","description":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.","status":"published","published":"2017-04-23T15:00:00Z","modified":"2024-08-05T23:32:20Z","updated_at":"2026-11-03T02:22:52.753944Z"}],"ghsa":[{"id":"GHSA-w6pf-cx8p-259q","title":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying...","description":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.","status":"published","published":"2022-05-13T01:26:08Z","modified":"2025-04-20T03:36:30Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T15:01:44.058341Z"}],"nvd":[{"id":"CVE-2016-2564","description":"Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.","status":"published","published":"2017-04-23T15:59:00.153Z","modified":"2026-06-17T00:44:18.387Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-331"],"updated_at":"2026-11-02T14:03:37.619685Z"}]}}