{"id":"CVE-2026-84155","aliases":["EUVD-2026-118040","GHSA-r42x-9wgw-cqc2"],"status":"published","title":"Session Token Remains Valid After Logout in Multi-Worker Deployments","description":"CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own\nin-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token\nfrom their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00139,"percentile":0.03324,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-613"],"published":"2026-11-06T10:27:24Z","modified":"2026-11-09T02:45:21Z","products":[{"vendor":"ericsson","product":"codechecker"}],"references":[{"url":"https://github.com/Ericsson/codechecker/security/advisories/GHSA-r42x-9wgw-cqc2","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84155.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84155","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-84155","title":"Session Token Remains Valid After Logout in Multi-Worker Deployments","description":"CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own\nin-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token\nfrom their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.","status":"published","published":"2026-11-06T10:27:24.656Z","modified":"2026-11-06T10:27:24.656Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-613"],"updated_at":"2026-11-06T11:27:55.289804Z"}],"euvd":[{"id":"EUVD-2026-118040","description":"CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own\nin-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token\nfrom their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.","status":"published","published":"2026-11-06T10:27:24Z","modified":"2026-11-06T10:27:24Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-06T11:04:41.469641Z"}],"nvd":[{"id":"CVE-2026-84155","description":"CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own\nin-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token\nfrom their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.","status":"published","published":"2026-11-06T11:17:17.043Z","modified":"2026-11-06T11:17:17.043Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/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":"medium","assessor":"secondary"}],"cwes":["CWE-613"],"updated_at":"2026-11-06T14:00:18.43156Z"}],"osv":[{"id":"CVE-2026-84155","title":"Session Token Remains Valid After Logout in Multi-Worker Deployments","description":"CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own\nin-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token\nfrom their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.","status":"published","published":"2026-11-06T10:27:24.656Z","modified":"2026-11-09T02:45:21.620582412Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-613"],"updated_at":"2026-11-09T03:16:44.651171Z"}]}}