{"id":"CVE-2021-22948","aliases":["EUVD-2021-10076","GHSA-27g5-f3jp-4f93"],"status":"published","title":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the...","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.02714,"percentile":0.86123,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-327","CWE-338","CWE-79"],"published":"2021-09-23T12:44:20Z","modified":"2026-10-24T10:30:29Z","products":[{"vendor":"revive-adserver","product":"revive_adserver"}],"references":[{"url":"https://hackerone.com/reports/1187820","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://www.revive-adserver.com/security/revive-sa-2021-005/","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22948"},{"url":"https://github.com/advisories/GHSA-27g5-f3jp-4f93"}],"sources":{"cve":[{"id":"CVE-2021-22948","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","status":"published","published":"2021-09-23T12:44:20Z","modified":"2024-08-03T18:58:26.133Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:58.028461Z"}],"euvd":[{"id":"EUVD-2021-10076","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","status":"published","published":"2021-09-23T12:44:20Z","modified":"2024-08-03T18:58:26Z","updated_at":"2026-11-03T03:25:01.154097Z"}],"ghsa":[{"id":"GHSA-27g5-f3jp-4f93","title":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the...","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","status":"published","published":"2022-05-24T19:15:35Z","modified":"2023-07-09T05:02:07Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-79","CWE-327","CWE-338"],"updated_at":"2026-11-02T14:54:42.043841Z"}],"nvd":[{"id":"CVE-2021-22948","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","status":"published","published":"2021-09-23T13:15:08.76Z","modified":"2026-06-17T03:38:05.443Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high","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-79","CWE-338"],"updated_at":"2026-11-02T14:06:58.933037Z"}],"osv":[{"id":"CVE-2021-22948","description":"Vulnerability in the generation of session IDs in revive-adserver \u003c 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.","status":"published","published":"2021-09-23T13:15:08.76Z","modified":"2026-10-24T10:30:29.618457408Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:18.367807Z"}]}}