{"cve":{"cve_id":"CVE-2026-40082","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have missing session_regenerate_id() after login, leading to Session Fixation. session_regenerate_id() is NOT called after successful login. The login flow at auth_login.php:203-207 directly sets $_SESSION[SESS_USER_ID] without rotating the session ID. The session cookie configuration is otherwise good (httponly=true, samesite=Strict, secure=true for HTTPS at include/global.php:513-537), but these do not prevent session fixation via same-site vectors. This issue has been fixed in version 1.2.31.","published_at":"2026-06-25T22:33:45.871000Z","last_modified_at":null,"cvss_v3_score":5.4,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-384"],"nvd_references":["https://github.com/Cacti/cacti/security/advisories/GHSA-273r-qr93-wgcp","https://github.com/Cacti/cacti/commit/2fa404e70a5702be10682555911228e8e51ba198","https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:53:49.239492Z","updated_at":"2026-06-28T23:30:10.460975Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"cacti","vendor_name":"Cacti","product_slug":"cacti","product_name":"cacti","version_start":"< 1.2.31","version_start_inclusive":true,"version_end":"< 1.2.31","version_end_inclusive":true,"cpe23_uri":"cve5:cacti:cacti:< 1.2.31:< 1.2.31"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/Cacti/cacti/security/advisories/GHSA-273r-qr93-wgcp","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/Cacti/cacti/commit/2fa404e70a5702be10682555911228e8e51ba198","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-06-25T22:33:45.871000Z","label":"CVE published","source":null}]}