{"id":"CVE-2026-38968","aliases":["AZL-92103","EUVD-2026-41472","GHSA-5rrm-76q9-hp77","UBUNTU-CVE-2026-38968"],"status":"published","title":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session...","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00553,"percentile":0.4666,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-341"],"published":"2026-07-02T00:00:00Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Azure Linux:3","package":"ntopng","fixed_in":["5.2.1-7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.1-7"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1+dfsg1-2ubuntu1","2.0+dfsg1-1","2.2+dfsg1-1","2.2+dfsg1-1build1","2.2+dfsg1-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4+dfsg1-3","2.4+dfsg1-4","3.2+dfsg1-1","3.2+dfsg1-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.8+dfsg1-2.1build3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg1-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg1-1","5.2.1+dfsg1-1ubuntu1","5.2.1+dfsg1-1ubuntu3","5.2.1+dfsg1-1ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"ntopng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg1-2ubuntu1"]}],"products":[{"vendor":"ntop","product":"ntopng"}],"references":[{"url":"https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5","tags":["Patch","fix","report"]},{"url":"https://github.com/ntop/ntopng/commit/14e22497233dc7d31d19dccb74b13bb073d16c2c","tags":["Patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-38968","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-5rrm-76q9-hp77"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38968.json","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-38968","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-38968","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-38968","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T00:00:00Z","modified":"2026-07-06T17:16:49.092Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-341"],"updated_at":"2026-11-02T14:19:58.214427Z"}],"euvd":[{"id":"EUVD-2026-41472","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T00:00:00Z","modified":"2026-07-06T17:16:49Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:20:12.791563Z"}],"ghsa":[{"id":"GHSA-5rrm-76q9-hp77","title":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session...","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T21:32:15Z","modified":"2026-07-06T18:31:48Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-341"],"updated_at":"2026-11-02T15:09:17.527527Z"}],"nvd":[{"id":"CVE-2026-38968","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T21:16:55.17Z","modified":"2026-07-08T18:39:19.38Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-341"],"updated_at":"2026-11-02T14:12:27.541515Z"}],"osv":[{"id":"CVE-2026-38968","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T00:00:00Z","modified":"2026-10-28T11:12:20.120951272Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:03.040464Z"},{"id":"UBUNTU-CVE-2026-38968","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T21:16:00Z","modified":"2026-07-09T15:18:06Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"AZL-92103","title":"CVE-2026-38968 affecting package ntopng for versions less than 5.2.1-7","description":"ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.","status":"published","published":"2026-07-02T21:16:55Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:25.633663Z"}]}}