{"id":"CVE-2026-93868","aliases":["EUVD-2026-83365","GHSA-rw92-cwm5-wp25"],"status":"published","title":"Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","severity":{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00734,"percentile":0.54868,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-338"],"published":"2026-09-18T19:56:34Z","modified":"2026-10-28T02:30:21Z","products":[{"vendor":"cotonti","product":"cotonti"}],"references":[{"url":"https://github.com/Cotonti/Cotonti/issues/1890","tags":["issue-tracking","exploit","report"]},{"url":"https://github.com/Cotonti/Cotonti/pull/1898","tags":["patch","issue-tracking","fix"]},{"url":"https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.passrecover.php","tags":["technical-description","article"]},{"url":"https://github.com/Cotonti/Cotonti","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-password-recovery-token-via-weak-prng","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93868","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rw92-cwm5-wp25"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93868.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-93868","title":"Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","status":"published","published":"2026-09-18T19:56:34.779Z","modified":"2026-09-24T14:23:16.939Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T14:19:54.122945Z"}],"euvd":[{"id":"EUVD-2026-83365","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","status":"published","published":"2026-09-18T19:56:34Z","modified":"2026-09-24T14:23:16Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:27:57.035497Z"}],"ghsa":[{"id":"GHSA-rw92-cwm5-wp25","title":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users...","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","status":"published","published":"2026-09-18T21:32:27Z","modified":"2026-09-18T21:32:41Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T15:12:12.782251Z"}],"nvd":[{"id":"CVE-2026-93868","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","status":"published","published":"2026-09-18T20:17:34.633Z","modified":"2026-09-22T20:53:07.383Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T14:12:50.043898Z"}],"osv":[{"id":"CVE-2026-93868","title":"Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG","description":"Cotonti through 1.0.0 derives password recovery validation tokens from md5(microtime()) in users.passrecover.php, creating a predictable token space of approximately one million values per second. Unauthenticated attackers can read the server Date header, precompute candidate tokens within a narrow time window, and probe them against the passrecover authentication endpoint to reset any account password including administrators.","status":"published","published":"2026-09-18T19:56:34.779Z","modified":"2026-10-28T02:30:21.061729219Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-338"],"updated_at":"2026-11-02T15:45:20.931171Z"}]}}