{"id":"CVE-2026-26456","aliases":["EUVD-2026-67097","GHSA-59pv-qgfv-jx2f"],"status":"published","title":"A null pointer dereference vulnerability exists in the server-side session management logic of...","description":"A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00377,"percentile":0.31954,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-362","CWE-476"],"published":"2026-08-27T00:00:00Z","modified":"2026-09-08T19:42:20Z","references":[{"url":"https://github.com/ipflavors/ccoap"},{"url":"https://github.com/songxpu/bug_report/blob/master/CoAP/ccoap/VULNERABILITY_REPORT5.md"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26456"},{"url":"https://github.com/advisories/GHSA-59pv-qgfv-jx2f"}],"sources":{"cve":[{"id":"CVE-2026-26456","description":"A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.","status":"published","published":"2026-08-27T00:00:00Z","modified":"2026-08-31T17:35:30.112Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-362","CWE-476"],"updated_at":"2026-11-02T13:38:32.13011Z"}],"euvd":[{"id":"EUVD-2026-67097","description":"A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.","status":"published","published":"2026-08-27T00:00:00Z","modified":"2026-08-31T17:35:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:20.215322Z"}],"ghsa":[{"id":"GHSA-59pv-qgfv-jx2f","title":"A null pointer dereference vulnerability exists in the server-side session management logic of...","description":"A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.","status":"published","published":"2026-08-27T18:32:21Z","modified":"2026-08-31T18:32:23Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T15:11:11.962153Z"}],"nvd":[{"id":"CVE-2026-26456","description":"A null pointer dereference vulnerability exists in the server-side session management logic of ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5. The issue is caused by a race condition between the request dispatch thread and the session cleanup thread when accessing shared session list nodes without proper synchronization.","status":"published","published":"2026-08-27T17:17:48.147Z","modified":"2026-09-08T19:42:20.313Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-362","CWE-476"],"updated_at":"2026-11-02T14:12:42.035353Z"}]}}