{"id":"CVE-2026-38968","details":"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.","modified":"2026-08-12T16:23:59.557720Z","published":"2026-07-02T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38968.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38968.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-38968"},{"type":"FIX","url":"https://github.com/ntop/ntopng/commit/14e22497233dc7d31d19dccb74b13bb073d16c2c"},{"type":"FIX","url":"https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ntop/ntopng","events":[{"introduced":"0"},{"fixed":"14e22497233dc7d31d19dccb74b13bb073d16c2c"},{"fixed":"179a346ceb6239fd36128ccca3efa8f9ea61eeb5"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:ntop:ntopng:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"6.6"}]}}],"versions":["3.0","2.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-38968.json","vanir_signatures_modified":"2026-08-12T16:23:59Z","vanir_signatures":[{"id":"CVE-2026-38968-b9e45c83","signature_type":"Line","signature_version":"v1","source":"https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5","target":{"file":"src/HTTPserver.cpp"},"deprecated":false,"digest":{"line_hashes":["222009431419484334841177881786736600980","247004660132795391032667421878610856806","238053543687649376743449774594964555522","332223907074496970045900132675129378415","298818670446966622846247040269399606233","308947198914652828150337600470163820436","16132733178538724815048124884242987162","142807654398877257216642739537513008241","261810662759194883816453991772616151567"],"threshold":0.9}},{"target":{"file":"src/HTTPserver.cpp","function":"generate_session_id"},"deprecated":false,"digest":{"function_hash":"111799603366028545207977962257464282993","length":254},"id":"CVE-2026-38968-e1b48ce8","signature_type":"Function","signature_version":"v1","source":"https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}