{"id":"CVE-2026-8670","aliases":["EUVD-2026-31435","GHSA-rvw7-wx4g-rq78"],"status":"published","title":"Insecure session handling on metrics web server","description":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay).\n\nThis issue affects Avantra: before 25.3.1.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00216,"percentile":0.12086,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2026-05-22T13:12:52Z","modified":"2026-07-23T16:10:00Z","products":[{"vendor":"avantra","product":"avantra"},{"vendor":"syslink software ag","product":"avantra"}],"references":[{"url":"https://support.avantra.com/hc/en-us/articles/5533929912351","tags":["vendor-advisory","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8670"},{"url":"https://github.com/advisories/GHSA-rvw7-wx4g-rq78"}],"sources":{"cve":[{"id":"CVE-2026-8670","title":"Insecure session handling on metrics web server","description":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay).\n\nThis issue affects Avantra: before 25.3.1.","status":"published","published":"2026-05-22T13:12:52.693Z","modified":"2026-05-22T15:05:13.802Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T13:48:13.398044Z"}],"euvd":[{"id":"EUVD-2026-31435","description":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay).\n\nThis issue affects Avantra: before 25.3.1.","status":"published","published":"2026-05-22T13:12:52Z","modified":"2026-05-22T15:05:13Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:21:12.491464Z"}],"ghsa":[{"id":"GHSA-rvw7-wx4g-rq78","title":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows...","description":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay).\n\nThis issue affects Avantra: before 25.3.1.","status":"published","published":"2026-05-26T13:30:17Z","modified":"2026-05-26T13:30:25Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T15:08:16.245994Z"}],"nvd":[{"id":"CVE-2026-8670","description":"Insufficient session expiration vulnerability in syslink software AG Avantra on Linux, Windows allows Reusing Session IDs (aka Session Replay).\n\nThis issue affects Avantra: before 25.3.1.","status":"published","published":"2026-05-22T14:16:29.64Z","modified":"2026-07-23T16:10:00.137Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-613"],"updated_at":"2026-11-02T14:12:20.131508Z"}]}}