{"id":"CVE-2026-109140","aliases":["EUVD-2026-115255","GHSA-7mpx-94gm-vm7j"],"status":"published","title":"Krill login-session tokens reuse their encryption nonce across restarts, so any user who can log in can forge an \"admin\" token","description":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00309,"percentile":0.24081,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-323"],"published":"2026-11-02T15:41:58Z","modified":"2026-11-02T19:35:33Z","products":[{"vendor":"nlnet labs","product":"krill"}],"references":[{"url":"https://www.nlnetlabs.nl/downloads/krill/CVE-2026-109140.txt","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109140"},{"url":"https://github.com/advisories/GHSA-7mpx-94gm-vm7j"}],"sources":{"cve":[{"id":"CVE-2026-109140","title":"Krill login-session tokens reuse their encryption nonce across restarts, so any user who can log in can forge an \"admin\" token","description":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.","status":"published","published":"2026-11-02T15:41:58.436Z","modified":"2026-11-02T16:12:58.713Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-323"],"updated_at":"2026-11-02T18:00:08.034842Z"}],"euvd":[{"id":"EUVD-2026-115255","description":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.","status":"published","published":"2026-11-02T15:41:58Z","modified":"2026-11-02T16:12:58Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-03T05:08:40.251173Z"}],"ghsa":[{"id":"GHSA-7mpx-94gm-vm7j","title":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a...","description":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.","status":"published","published":"2026-11-02T18:32:25Z","modified":"2026-11-02T18:32:25Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"cwes":["CWE-323"],"updated_at":"2026-11-02T19:02:40.409728Z"}],"nvd":[{"id":"CVE-2026-109140","description":"The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.","status":"published","published":"2026-11-02T16:17:26.953Z","modified":"2026-11-02T19:35:33.347Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-323"],"updated_at":"2026-11-03T00:02:42.67885Z"}]}}