{"id":"CVE-2026-117468","title":"Device-code claim permits restricted token escalation in Psono Server","summary":"Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-c…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cvssSource":"cna","cwe":["CWE-269"],"vendor":"esaqa GmbH","product":"Psono","affected":["Psono >= 5.3.5 < 7.2.4"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T05:59:08.920Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-117468","references":[{"url":"https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/views/device_code_claim.py"},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/commit/19ed5a192c704fece1645d946b6f4c36045bacbe"},{"url":"https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4"},{"url":"https://gitlab.com/esaqa/psono/psono-server"},{"url":"https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117468.md"}],"tags":["cve.org"],"epss":0.00468,"epssPercentile":0.40298,"ingestedAt":"2026-10-27T16:11:59.224Z","slug":"CVE-2026-117468","body":"## Overview\n\nPsono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token's scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.\n\n## Affected\n\n- `Psono >= 5.3.5 < 7.2.4`\n\n## Remediation\n\nUpgrade to Psono Server 7.2.4 or later.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}